31201113001 has 4 divisors (see below), whose sum is σ = 31282578432. Its totient is φ = 31119647572.

The previous prime is 31201112989. The next prime is 31201113029. The reversal of 31201113001 is 10031110213.

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.

It is a cyclic number.

It is not a de Polignac number, because 31201113001 - 2²³ = 31192724393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31201113061) 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, 40732141 + ... + 40732906.

It is an arithmetic number, because the mean of its divisors is an integer number (7820644608).

Almost surely, 2^31201113001 is an apocalyptic number.

It is an amenable number.

31201113001 is a deficient number, since it is larger than the sum of its proper divisors (81465431).

31201113001 is an equidigital number, since it uses as much as digits as its factorization.

31201113001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81465430.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31201113001 its reverse (10031110213), we get a palindrome (41232223214).

The spelling of 31201113001 in words is "thirty-one billion, two hundred one million, one hundred thirteen thousand, one".