31231211132 has 24 divisors (see below), whose sum is σ = 59655657600. Its totient is φ = 14188282160.

The previous prime is 31231211101. The next prime is 31231211147. The reversal of 31231211132 is 23111213213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110882 + ... + 273417.

It is an arithmetic number, because the mean of its divisors is an integer number (2485652400).

Almost surely, 2^31231211132 is an apocalyptic number.

It is an amenable number.

31231211132 is a deficient number, since it is larger than the sum of its proper divisors (28424446468).

31231211132 is a wasteful number, since it uses less digits than its factorization.

31231211132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386161 (or 386159 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 31231211132 its reverse (23111213213), we get a palindrome (54342424345).

The spelling of 31231211132 in words is "thirty-one billion, two hundred thirty-one million, two hundred eleven thousand, one hundred thirty-two".