31132354231 has 16 divisors (see below), whose sum is σ = 34311819168. Its totient is φ = 28011312000.

The previous prime is 31132354219. The next prime is 31132354249. The reversal of 31132354231 is 13245323113.

It is a cyclic number.

It is not a de Polignac number, because 31132354231 - 2⁵ = 31132354199 is a prime.

It is a super-2 number, since 2×31132354231² (a number of 22 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 31132354231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132354831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5504401 + ... + 5510053.

It is an arithmetic number, because the mean of its divisors is an integer number (2144488698).

Almost surely, 2^31132354231 is an apocalyptic number.

31132354231 is a deficient number, since it is larger than the sum of its proper divisors (3179464937).

31132354231 is a wasteful number, since it uses less digits than its factorization.

31132354231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10722.

The product of its digits is 6480, while the sum is 28.

Adding to 31132354231 its reverse (13245323113), we get a palindrome (44377677344).

The spelling of 31132354231 in words is "thirty-one billion, one hundred thirty-two million, three hundred fifty-four thousand, two hundred thirty-one".