31144111121004 has 48 divisors (see below), whose sum is σ = 83254021670400. Its totient is φ = 8876561175936.

The previous prime is 31144111120957. The next prime is 31144111121021. The reversal of 31144111121004 is 40012111144113.

It is a happy 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, 453221424 + ... + 453290135.

It is an arithmetic number, because the mean of its divisors is an integer number (1734458784800).

Almost surely, 2^{31144111121004} is an apocalyptic number.

It is an amenable number.

31144111121004 is an abundant number, since it is smaller than the sum of its proper divisors (52109910549396).

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

31144111121004 is a wasteful number, since it uses less digits than its factorization.

31144111121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906511982 (or 906511980 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 31144111121004 its reverse (40012111144113), we get a palindrome (71156222265117).

The spelling of 31144111121004 in words is "thirty-one trillion, one hundred forty-four billion, one hundred eleven million, one hundred twenty-one thousand, four".