31331442104 has 16 divisors (see below), whose sum is σ = 58806231120. Its totient is φ = 15649780480.

The previous prime is 31331442097. The next prime is 31331442113. The reversal of 31331442104 is 40124413313.

It is a happy number.

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, 1984217 + ... + 1999944.

It is an arithmetic number, because the mean of its divisors is an integer number (3675389445).

Almost surely, 2^31331442104 is an apocalyptic number.

It is an amenable number.

31331442104 is a deficient number, since it is larger than the sum of its proper divisors (27474789016).

31331442104 is a wasteful number, since it uses less digits than its factorization.

31331442104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985150 (or 3985146 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31331442104 its reverse (40124413313), we get a palindrome (71455855417).

The spelling of 31331442104 in words is "thirty-one billion, three hundred thirty-one million, four hundred forty-two thousand, one hundred four".