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31211200211213 = 119124331096981
BaseRepresentation
bin1110001100010111011001…
…00000000110100100001101
311002111202120012120112212002
413012023230200012210031
513042331014223224323
6150214121043122045
76400635431332241
oct706135440064415
9132452505515762
1031211200211213
119a43660932650
123600b33973325
131455285280a69
1479c8b71c0421
15391d1ce00828
hex1c62ec80690d

31211200211213 has 8 divisors (see below), whose sum is σ = 34048956307296. Its totient is φ = 28373506491600.

The previous prime is 31211200211197. The next prime is 31211200211267.

It can be divided in two parts, 31211200 and 211213, that added together give a palindrome (31422413).

31211200211213 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31211200211213 - 24 = 31211200211197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31211200511213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14544818 + ... + 16552163.

It is an arithmetic number, because the mean of its divisors is an integer number (4256119538412).

Almost surely, 231211200211213 is an apocalyptic number.

It is an amenable number.

31211200211213 is a deficient number, since it is larger than the sum of its proper divisors (2837756096083).

31211200211213 is a wasteful number, since it uses less digits than its factorization.

31211200211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31188235.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 31211200211213 in words is "thirty-one trillion, two hundred eleven billion, two hundred million, two hundred eleven thousand, two hundred thirteen".

Divisors: 1 11 91243 1003673 31096981 342066791 2837381837383 31211200211213