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31023202101 = 349121061237
BaseRepresentation
bin11100111001001000…
…000111111100110101
32222002001121221210020
4130321020013330311
51002013414431401
622130222515353
72145532603233
oct347110077465
988061557706
1031023202101
111217a874a01
126019735b59
132c05367028
1417042b5953
15c1888ed36
hex739207f35

31023202101 has 8 divisors (see below), whose sum is σ = 41448516384. Its totient is φ = 20640011280.

The previous prime is 31023202087. The next prime is 31023202103. The reversal of 31023202101 is 10120232013.

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

It is not a de Polignac number, because 31023202101 - 25 = 31023202069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023202103) 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, 10529146 + ... + 10532091.

It is an arithmetic number, because the mean of its divisors is an integer number (5181064548).

Almost surely, 231023202101 is an apocalyptic number.

It is an amenable number.

31023202101 is a deficient number, since it is larger than the sum of its proper divisors (10425314283).

31023202101 is a wasteful number, since it uses less digits than its factorization.

31023202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21061731.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31023202101 its reverse (10120232013), we get a palindrome (41143434114).

The spelling of 31023202101 in words is "thirty-one billion, twenty-three million, two hundred two thousand, one hundred one".

Divisors: 1 3 491 1473 21061237 63183711 10341067367 31023202101