31040131330324 has 12 divisors (see below), whose sum is σ = 54323009772948. Its totient is φ = 15519271395200.

The previous prime is 31040131330283. The next prime is 31040131330349. The reversal of 31040131330324 is 42303313104013.

It can be written as a sum of positive squares in 2 ways, for example, as 15939912520324 + 15100218810000 = 3992482^2 + 3885900^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31040131330292 and 31040131330301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198479557 + ... + 198635884.

It is an arithmetic number, because the mean of its divisors is an integer number (4526917481079).

Almost surely, 2^{31040131330324} is an apocalyptic number.

It is an amenable number.

31040131330324 is a deficient number, since it is larger than the sum of its proper divisors (23282878442624).

31040131330324 is a wasteful number, since it uses less digits than its factorization.

31040131330324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397134986 (or 397134984 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31040131330324 its reverse (42303313104013), we get a palindrome (73343444434337).

The spelling of 31040131330324 in words is "thirty-one trillion, forty billion, one hundred thirty-one million, three hundred thirty thousand, three hundred twenty-four".