102131030231 has 4 divisors (see below), whose sum is σ = 102358494000. Its totient is φ = 101903566464.

The previous prime is 102131030189. The next prime is 102131030233. The reversal of 102131030231 is 132030131201.

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

It is a cyclic number.

It is not a de Polignac number, because 102131030231 - 2²² = 102126835927 is a prime.

It is a super-2 number, since 2×102131030231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131030233) 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, 113731211 + ... + 113732108.

It is an arithmetic number, because the mean of its divisors is an integer number (25589623500).

Almost surely, 2^102131030231 is an apocalyptic number.

102131030231 is a deficient number, since it is larger than the sum of its proper divisors (227463769).

102131030231 is an equidigital number, since it uses as much as digits as its factorization.

102131030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227463768.

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

Adding to 102131030231 its reverse (132030131201), we get a palindrome (234161161432).

The spelling of 102131030231 in words is "one hundred two billion, one hundred thirty-one million, thirty thousand, two hundred thirty-one".