31102002001 has 4 divisors (see below), whose sum is σ = 35545145152. Its totient is φ = 26658858852.

The previous prime is 31102001999. The next prime is 31102002017. The reversal of 31102002001 is 10020020113.

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 31102002001 - 2¹ = 31102001999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31102002601) 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, 2221571565 + ... + 2221571578.

It is an arithmetic number, because the mean of its divisors is an integer number (8886286288).

Almost surely, 2^31102002001 is an apocalyptic number.

It is an amenable number.

31102002001 is a deficient number, since it is larger than the sum of its proper divisors (4443143151).

31102002001 is an equidigital number, since it uses as much as digits as its factorization.

31102002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443143150.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 31102002001 its reverse (10020020113), we get a palindrome (41122022114).

The spelling of 31102002001 in words is "thirty-one billion, one hundred two million, two thousand, one".