102130211031 has 4 divisors (see below), whose sum is σ = 136173614712. Its totient is φ = 68086807352.

The previous prime is 102130211009. The next prime is 102130211063. The reversal of 102130211031 is 130112031201.

It is a happy number.

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 102130211031 - 2¹⁵ = 102130178263 is a prime.

It is a super-2 number, since 2×102130211031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102130211031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102130211081) 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, 17021701836 + ... + 17021701841.

It is an arithmetic number, because the mean of its divisors is an integer number (34043403678).

Almost surely, 2^102130211031 is an apocalyptic number.

102130211031 is a deficient number, since it is larger than the sum of its proper divisors (34043403681).

102130211031 is an equidigital number, since it uses as much as digits as its factorization.

102130211031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34043403680.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 102130211031 its reverse (130112031201), we get a palindrome (232242242232).

The spelling of 102130211031 in words is "one hundred two billion, one hundred thirty million, two hundred eleven thousand, thirty-one".