31613612103 has 12 divisors (see below), whose sum is σ = 45679311288. Its totient is φ = 21068723760.

The previous prime is 31613612087. The next prime is 31613612179. The reversal of 31613612103 is 30121631613.

31613612103 is a `hidden beast` number, since 31 + 6 + 1 + 3 + 612 + 10 + 3 = 666.

It is not a de Polignac number, because 31613612103 - 2⁴ = 31613612087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31613617103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556200 + ... + 610397.

It is an arithmetic number, because the mean of its divisors is an integer number (3806609274).

Almost surely, 2^31613612103 is an apocalyptic number.

31613612103 is a deficient number, since it is larger than the sum of its proper divisors (14065699185).

31613612103 is a wasteful number, since it uses less digits than its factorization.

31613612103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169614 (or 1169611 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 31613612103 in words is "thirty-one billion, six hundred thirteen million, six hundred twelve thousand, one hundred three".