31213031202107 has 16 divisors (see below), whose sum is σ = 31540653144000. Its totient is φ = 30886181207424.

The previous prime is 31213031202061. The next prime is 31213031202149. The reversal of 31213031202107 is 70120213031213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31213031202107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31213031202307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323104769 + ... + 323201357.

It is an arithmetic number, because the mean of its divisors is an integer number (1971290821500).

Almost surely, 2^{31213031202107} is an apocalyptic number.

31213031202107 is a deficient number, since it is larger than the sum of its proper divisors (327621941893).

31213031202107 is a wasteful number, since it uses less digits than its factorization.

31213031202107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100550.

The product of its (nonzero) digits is 1512, while the sum is 26.

The spelling of 31213031202107 in words is "thirty-one trillion, two hundred thirteen billion, thirty-one million, two hundred two thousand, one hundred seven".