31012001232 has 40 divisors (see below), whose sum is σ = 80160568800. Its totient is φ = 10331368320.

The previous prime is 31012001231. The next prime is 31012001261. The reversal of 31012001232 is 23210021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012001231) 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, 101982 + ... + 269117.

It is an arithmetic number, because the mean of its divisors is an integer number (2004014220).

Almost surely, 2^31012001232 is an apocalyptic number.

It is an amenable number.

31012001232 is an abundant number, since it is smaller than the sum of its proper divisors (49148567568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31012001232 is a wasteful number, since it uses less digits than its factorization.

31012001232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372851 (or 372845 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31012001232 its reverse (23210021013), we get a palindrome (54222022245).

The spelling of 31012001232 in words is "thirty-one billion, twelve million, one thousand, two hundred thirty-two".