31311121203132 has 48 divisors (see below), whose sum is σ = 73078139097600. Its totient is φ = 10434347054208.

The previous prime is 31311121203113. The next prime is 31311121203149. The reversal of 31311121203132 is 23130212111313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 943117869 + ... + 943151067.

It is an arithmetic number, because the mean of its divisors is an integer number (1522461231200).

Almost surely, 2^{31311121203132} is an apocalyptic number.

It is an amenable number.

31311121203132 is an abundant number, since it is smaller than the sum of its proper divisors (41767017894468).

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

31311121203132 is a wasteful number, since it uses less digits than its factorization.

31311121203132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51122 (or 51120 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31311121203132 its reverse (23130212111313), we get a palindrome (54441333314445).

The spelling of 31311121203132 in words is "thirty-one trillion, three hundred eleven billion, one hundred twenty-one million, two hundred three thousand, one hundred thirty-two".