2131111031231 has 8 divisors (see below), whose sum is σ = 2622905884704. Its totient is φ = 1686153782880.

The previous prime is 2131111031221. The next prime is 2131111031261. The reversal of 2131111031231 is 1321301111312.

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

It is not a de Polignac number, because 2131111031231 - 2⁶ = 2131111031167 is a prime.

It is a super-2 number, since 2×2131111031231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131111031221) 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, 11709401180 + ... + 11709401361.

It is an arithmetic number, because the mean of its divisors is an integer number (327863235588).

Almost surely, 2^{2131111031231} is an apocalyptic number.

2131111031231 is a deficient number, since it is larger than the sum of its proper divisors (491794853473).

2131111031231 is a wasteful number, since it uses less digits than its factorization.

2131111031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23418802561.

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

Adding to 2131111031231 its reverse (1321301111312), we get a palindrome (3452412142543).

The spelling of 2131111031231 in words is "two trillion, one hundred thirty-one billion, one hundred eleven million, thirty-one thousand, two hundred thirty-one".