31130013001 has 4 divisors (see below), whose sum is σ = 31657640400. Its totient is φ = 30602385604.

The previous prime is 31130012999. The next prime is 31130013017. The reversal of 31130013001 is 10031003113.

It is a happy number.

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 31130013001 - 2¹ = 31130012999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31130013071) 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, 263813611 + ... + 263813728.

It is an arithmetic number, because the mean of its divisors is an integer number (7914410100).

Almost surely, 2^31130013001 is an apocalyptic number.

It is an amenable number.

31130013001 is a deficient number, since it is larger than the sum of its proper divisors (527627399).

31130013001 is an equidigital number, since it uses as much as digits as its factorization.

31130013001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527627398.

The product of its (nonzero) digits is 27, while the sum is 13.

Adding to 31130013001 its reverse (10031003113), we get a palindrome (41161016114).

The spelling of 31130013001 in words is "thirty-one billion, one hundred thirty million, thirteen thousand, one".