231030111021131 has 8 divisors (see below), whose sum is σ = 231499320452400. Its totient is φ = 230561183318400.

The previous prime is 231030111021091. The next prime is 231030111021173. The reversal of 231030111021131 is 131120111030132.

231030111021131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231030111021131 is a prime.

It is a super-2 number, since 2×231030111021131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231030111024131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68790341 + ... + 72070598.

It is an arithmetic number, because the mean of its divisors is an integer number (28937415056550).

Almost surely, 2^{231030111021131} is an apocalyptic number.

231030111021131 is a deficient number, since it is larger than the sum of its proper divisors (469209431269).

231030111021131 is a wasteful number, since it uses less digits than its factorization.

231030111021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140864269.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 231030111021131 its reverse (131120111030132), we get a palindrome (362150222051263).

Subtracting from 231030111021131 its reverse (131120111030132), we obtain a palindrome (99909999990999).

The spelling of 231030111021131 in words is "two hundred thirty-one trillion, thirty billion, one hundred eleven million, twenty-one thousand, one hundred thirty-one".