102311321031 has 24 divisors (see below), whose sum is σ = 151388516864. Its totient is φ = 66561082560.

The previous prime is 102311321029. The next prime is 102311321053. The reversal of 102311321031 is 130123113201.

102311321031 is a `hidden beast` number, since 1 + 0 + 2 + 311 + 321 + 0 + 31 = 666.

It is not a de Polignac number, because 102311321031 - 2¹ = 102311321029 is a prime.

It is a super-2 number, since 2×102311321031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102311320995 and 102311321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102311323031) 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 23 ways as a sum of consecutive naturals, for example, 663976 + ... + 803421.

Almost surely, 2^102311321031 is an apocalyptic number.

102311321031 is a deficient number, since it is larger than the sum of its proper divisors (49077195833).

102311321031 is a wasteful number, since it uses less digits than its factorization.

102311321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467591 (or 1467588 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 102311321031 its reverse (130123113201), we get a palindrome (232434434232).

The spelling of 102311321031 in words is "one hundred two billion, three hundred eleven million, three hundred twenty-one thousand, thirty-one".