31130010001 has 16 divisors (see below), whose sum is σ = 33839042560. Its totient is φ = 28528802640.

The previous prime is 31130009971. The next prime is 31130010019. The reversal of 31130010001 is 10001003113.

It is a cyclic number.

It is not a de Polignac number, because 31130010001 - 2⁷ = 31130009873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31130010001.

It is not an unprimeable number, because it can be changed into a prime (31130010101) 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, 1691290 + ... + 1709596.

It is an arithmetic number, because the mean of its divisors is an integer number (2114940160).

Almost surely, 2^31130010001 is an apocalyptic number.

31130010001 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31130010001 is a deficient number, since it is larger than the sum of its proper divisors (2709032559).

31130010001 is a wasteful number, since it uses less digits than its factorization.

31130010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21244.

The product of its (nonzero) digits is 9, while the sum is 10.

Adding to 31130010001 its reverse (10001003113), we get a palindrome (41131013114).

The spelling of 31130010001 in words is "thirty-one billion, one hundred thirty million, ten thousand, one".