32131011231 has 20 divisors (see below), whose sum is σ = 52361649384. Its totient is φ = 19473339600.

The previous prime is 32131011221. The next prime is 32131011257. The reversal of 32131011231 is 13211013123.

32131011231 is a `hidden beast` number, since 321 + 310 + 1 + 1 + 2 + 31 = 666.

It is not a de Polignac number, because 32131011231 - 2³⁰ = 31057269407 is a prime.

It is a super-2 number, since 2×32131011231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32131011221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18029980 + ... + 18031761.

Almost surely, 2^32131011231 is an apocalyptic number.

32131011231 is a deficient number, since it is larger than the sum of its proper divisors (20230638153).

32131011231 is a wasteful number, since it uses less digits than its factorization.

32131011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36061764 (or 36061755 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 32131011231 its reverse (13211013123), we get a palindrome (45342024354).

The spelling of 32131011231 in words is "thirty-two billion, one hundred thirty-one million, eleven thousand, two hundred thirty-one".