31356245605413 has 32 divisors (see below), whose sum is σ = 43560544038912. Its totient is φ = 20041268284800.

The previous prime is 31356245605403. The next prime is 31356245605423. The reversal of 31356245605413 is 31450654265313.

It is an interprime number because it is at equal distance from previous prime (31356245605403) and next prime (31356245605423).

It is not a de Polignac number, because 31356245605413 - 2¹⁶ = 31356245539877 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31356245605403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3749670 + ... + 8761992.

It is an arithmetic number, because the mean of its divisors is an integer number (1361267001216).

Almost surely, 2^{31356245605413} is an apocalyptic number.

It is an amenable number.

31356245605413 is a deficient number, since it is larger than the sum of its proper divisors (12204298433499).

31356245605413 is a wasteful number, since it uses less digits than its factorization.

31356245605413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012985.

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 31356245605413 in words is "thirty-one trillion, three hundred fifty-six billion, two hundred forty-five million, six hundred five thousand, four hundred thirteen".