31860446013 has 64 divisors (see below), whose sum is σ = 53308661760. Its totient is φ = 18631641600.

The previous prime is 31860446003. The next prime is 31860446081. The reversal of 31860446013 is 31064406813.

It is a happy number.

31860446013 is a `hidden beast` number, since 3 + 1 + 8 + 6 + 0 + 44 + 601 + 3 = 666.

It is not a de Polignac number, because 31860446013 - 2⁶ = 31860445949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31860446003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3245170 + ... + 3254972.

It is an arithmetic number, because the mean of its divisors is an integer number (832947840).

Almost surely, 2^31860446013 is an apocalyptic number.

31860446013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31860446013 is a deficient number, since it is larger than the sum of its proper divisors (21448215747).

31860446013 is a wasteful number, since it uses less digits than its factorization.

31860446013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207 (or 10201 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 31860446013 in words is "thirty-one billion, eight hundred sixty million, four hundred forty-six thousand, thirteen".