31105220252413 has 8 divisors (see below), whose sum is σ = 31329483847200. Its totient is φ = 30880963586928.

The previous prime is 31105220252371. The next prime is 31105220252419. The reversal of 31105220252413 is 31425202250113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31105220252413 - 2²¹ = 31105218155261 is a prime.

It is a super-2 number, since 2×31105220252413² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31105220252419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7452843 + ... + 10851511.

It is an arithmetic number, because the mean of its divisors is an integer number (3916185480900).

Almost surely, 2^{31105220252413} is an apocalyptic number.

It is an amenable number.

31105220252413 is a deficient number, since it is larger than the sum of its proper divisors (224263594787).

31105220252413 is a wasteful number, since it uses less digits than its factorization.

31105220252413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464651.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 31105220252413 in words is "thirty-one trillion, one hundred five billion, two hundred twenty million, two hundred fifty-two thousand, four hundred thirteen".