31201320101 has 16 divisors (see below), whose sum is σ = 36429657600. Its totient is φ = 26171728128.

The previous prime is 31201320089. The next prime is 31201320113. The reversal of 31201320101 is 10102310213.

It is an interprime number because it is at equal distance from previous prime (31201320089) and next prime (31201320113).

It is not a de Polignac number, because 31201320101 - 2⁶ = 31201320037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201320121) 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, 187166 + ... + 312143.

It is an arithmetic number, because the mean of its divisors is an integer number (2276853600).

Almost surely, 2^31201320101 is an apocalyptic number.

It is an amenable number.

31201320101 is a deficient number, since it is larger than the sum of its proper divisors (5228337499).

31201320101 is a wasteful number, since it uses less digits than its factorization.

31201320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499508.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31201320101 its reverse (10102310213), we get a palindrome (41303630314).

The spelling of 31201320101 in words is "thirty-one billion, two hundred one million, three hundred twenty thousand, one hundred one".