31231331200312 has 16 divisors (see below), whose sum is σ = 58600306522800. Its totient is φ = 15604582794240.

The previous prime is 31231331200291. The next prime is 31231331200373. The reversal of 31231331200312 is 21300213313213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385338764 + ... + 1385361307.

It is an arithmetic number, because the mean of its divisors is an integer number (3662519157675).

Almost surely, 2^{31231331200312} is an apocalyptic number.

It is an amenable number.

31231331200312 is a deficient number, since it is larger than the sum of its proper divisors (27368975322488).

31231331200312 is a wasteful number, since it uses less digits than its factorization.

31231331200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770701486 (or 2770701482 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31231331200312 its reverse (21300213313213), we get a palindrome (52531544513525).

The spelling of 31231331200312 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred thirty-one million, two hundred thousand, three hundred twelve".