31230210013 has 4 divisors (see below), whose sum is σ = 31404680640. Its totient is φ = 31055739388.

The previous prime is 31230210001. The next prime is 31230210019. The reversal of 31230210013 is 31001203213.

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 31230210013 - 2⁵ = 31230209981 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 (31230210019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87235045 + ... + 87235402.

It is an arithmetic number, because the mean of its divisors is an integer number (7851170160).

Almost surely, 2^31230210013 is an apocalyptic number.

It is an amenable number.

31230210013 is a deficient number, since it is larger than the sum of its proper divisors (174470627).

31230210013 is a wasteful number, since it uses less digits than its factorization.

31230210013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174470626.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31230210013 its reverse (31001203213), we get a palindrome (62231413226).

The spelling of 31230210013 in words is "thirty-one billion, two hundred thirty million, two hundred ten thousand, thirteen".