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31013210023201 = 7172149223461381
BaseRepresentation
bin1110000110100110100110…
…10111011110010100100001
311001210211111221002220002201
413003103103113132110201
513031110023231220301
6145543134430213201
76350426153444350
oct703232327362441
9131724457086081
1031013210023201
1199776a05aa99a
12358a699354201
13143c6c1463063
14793093dcd997
1538bad112b201
hex1c34d35de521

31013210023201 has 48 divisors (see below), whose sum is σ = 38073980851200. Its totient is φ = 24739653288960.

The previous prime is 31013210023199. The next prime is 31013210023339. The reversal of 31013210023201 is 10232001231013.

It is not a de Polignac number, because 31013210023201 - 21 = 31013210023199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31013210020201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66987531 + ... + 67448911.

It is an arithmetic number, because the mean of its divisors is an integer number (793207934400).

Almost surely, 231013210023201 is an apocalyptic number.

It is an amenable number.

31013210023201 is a deficient number, since it is larger than the sum of its proper divisors (7060770827999).

31013210023201 is a wasteful number, since it uses less digits than its factorization.

31013210023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461794 (or 461777 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31013210023201 its reverse (10232001231013), we get a palindrome (41245211254214).

The spelling of 31013210023201 in words is "thirty-one trillion, thirteen billion, two hundred ten million, twenty-three thousand, two hundred one".

Divisors: 1 7 17 119 149 223 289 1043 1561 2023 2533 3791 17731 26537 33227 43061 64447 232589 301427 451129 461381 564859 3229667 3954013 7843477 9602603 54904339 67218221 68745769 102887963 133339109 481220383 720215741 933373763 1168678073 1749095371 8180746511 12243667597 15330306487 19867527241 29734621307 107312145409 139072690687 208142349149 260615210279 1824306471953 4430458574743 31013210023201