31130129653 has 4 divisors (see below), whose sum is σ = 35577291040. Its totient is φ = 26682968268.

The previous prime is 31130129651. The next prime is 31130129669. The reversal of 31130129653 is 35692103113.

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 31130129653 - 2¹ = 31130129651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130129651) 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, 2223580683 + ... + 2223580696.

It is an arithmetic number, because the mean of its divisors is an integer number (8894322760).

Almost surely, 2^31130129653 is an apocalyptic number.

It is an amenable number.

31130129653 is a deficient number, since it is larger than the sum of its proper divisors (4447161387).

31130129653 is an equidigital number, since it uses as much as digits as its factorization.

31130129653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447161386.

The product of its (nonzero) digits is 14580, while the sum is 34.

The spelling of 31130129653 in words is "thirty-one billion, one hundred thirty million, one hundred twenty-nine thousand, six hundred fifty-three".