31240251141132 has 48 divisors (see below), whose sum is σ = 79801631021952. Its totient is φ = 9433291370880.

The previous prime is 31240251141131. The next prime is 31240251141173. The reversal of 31240251141132 is 23114115204213.

It is a self number, because there is not a number n which added to its sum of digits gives 31240251141132.

It is not an unprimeable number, because it can be changed into a prime (31240251141131) 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, 418104993 + ... + 418179704.

It is an arithmetic number, because the mean of its divisors is an integer number (1662533979624).

Almost surely, 2^{31240251141132} is an apocalyptic number.

It is an amenable number.

31240251141132 is an abundant number, since it is smaller than the sum of its proper divisors (48561379880820).

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

31240251141132 is a wasteful number, since it uses less digits than its factorization.

31240251141132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836284998 (or 836284996 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 31240251141132 its reverse (23114115204213), we get a palindrome (54354366345345).

The spelling of 31240251141132 in words is "thirty-one trillion, two hundred forty billion, two hundred fifty-one million, one hundred forty-one thousand, one hundred thirty-two".