102123403031 has 16 divisors (see below), whose sum is σ = 115856361600. Its totient is φ = 89237684448.

The previous prime is 102123403021. The next prime is 102123403097. The reversal of 102123403031 is 130304321201.

It is a cyclic number.

It is not a de Polignac number, because 102123403031 - 2²⁶ = 102056294167 is a prime.

It is a super-2 number, since 2×102123403031² (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 = 102123402994 and 102123403012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123403021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164660 + ... + 480998.

It is an arithmetic number, because the mean of its divisors is an integer number (7241022600).

Almost surely, 2^102123403031 is an apocalyptic number.

102123403031 is a deficient number, since it is larger than the sum of its proper divisors (13732958569).

102123403031 is a wasteful number, since it uses less digits than its factorization.

102123403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317678.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 102123403031 its reverse (130304321201), we get a palindrome (232427724232).

The spelling of 102123403031 in words is "one hundred two billion, one hundred twenty-three million, four hundred three thousand, thirty-one".