31013020201 has 4 divisors (see below), whose sum is σ = 31026702672. Its totient is φ = 30999337732.

The previous prime is 31013020177. The next prime is 31013020211. The reversal of 31013020201 is 10202031013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10202031013 = 6301 ⋅1619113.

It is a cyclic number.

It is not a de Polignac number, because 31013020201 - 2²⁹ = 30476149289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31013020211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6837835 + ... + 6842368.

It is an arithmetic number, because the mean of its divisors is an integer number (7756675668).

Almost surely, 2^31013020201 is an apocalyptic number.

It is an amenable number.

31013020201 is a deficient number, since it is larger than the sum of its proper divisors (13682471).

31013020201 is a wasteful number, since it uses less digits than its factorization.

31013020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13682470.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31013020201 its reverse (10202031013), we get a palindrome (41215051214).

The spelling of 31013020201 in words is "thirty-one billion, thirteen million, twenty thousand, two hundred one".