102131030002031 has 4 divisors (see below), whose sum is σ = 104891328110232. Its totient is φ = 99370731893832.

The previous prime is 102131030001943. The next prime is 102131030002039. The reversal of 102131030002031 is 130200030131201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102131030002031 is a prime.

It is a super-2 number, since 2×102131030002031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131030002039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380149054045 + ... + 1380149054118.

It is an arithmetic number, because the mean of its divisors is an integer number (26222832027558).

Almost surely, 2^{102131030002031} is an apocalyptic number.

102131030002031 is a deficient number, since it is larger than the sum of its proper divisors (2760298108201).

102131030002031 is an equidigital number, since it uses as much as digits as its factorization.

102131030002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760298108200.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 102131030002031 its reverse (130200030131201), we get a palindrome (232331060133232).

The spelling of 102131030002031 in words is "one hundred two trillion, one hundred thirty-one billion, thirty million, two thousand, thirty-one".