31231131302132 has 24 divisors (see below), whose sum is σ = 55029633120000. Its totient is φ = 15508410772256.

The previous prime is 31231131302099. The next prime is 31231131302177. The reversal of 31231131302132 is 23120313113213.

It is a super-3 number, since 3×31231131302132³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37388 + ... + 7903395.

It is an arithmetic number, because the mean of its divisors is an integer number (2292901380000).

Almost surely, 2^{31231131302132} is an apocalyptic number.

It is an amenable number.

31231131302132 is a deficient number, since it is larger than the sum of its proper divisors (23798501817868).

31231131302132 is a wasteful number, since it uses less digits than its factorization.

31231131302132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947535 (or 7947533 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31231131302132 its reverse (23120313113213), we get a palindrome (54351444415345).

The spelling of 31231131302132 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred thirty-one million, three hundred two thousand, one hundred thirty-two".