31312440121004 has 48 divisors (see below), whose sum is σ = 66309469918272. Its totient is φ = 12630080673792.

The previous prime is 31312440121003. The next prime is 31312440121007. The reversal of 31312440121004 is 40012104421313.

It is not an unprimeable number, because it can be changed into a prime (31312440121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46493114 + ... + 47161790.

It is an arithmetic number, because the mean of its divisors is an integer number (1381447289964).

Almost surely, 2^{31312440121004} is an apocalyptic number.

31312440121004 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31312440121004 is an abundant number, since it is smaller than the sum of its proper divisors (34997029797268).

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

31312440121004 is a wasteful number, since it uses less digits than its factorization.

31312440121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767082 (or 767080 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 31312440121004 its reverse (40012104421313), we get a palindrome (71324544542317).

The spelling of 31312440121004 in words is "thirty-one trillion, three hundred twelve billion, four hundred forty million, one hundred twenty-one thousand, four".