31123200013 has 8 divisors (see below), whose sum is σ = 31341254400. Its totient is φ = 30905268240.

The previous prime is 31123200011. The next prime is 31123200019. The reversal of 31123200013 is 31000232113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31123200013 - 2¹ = 31123200011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31123200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123200011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512256 + ... + 569782.

It is an arithmetic number, because the mean of its divisors is an integer number (3917656800).

Almost surely, 2^31123200013 is an apocalyptic number.

It is an amenable number.

31123200013 is a deficient number, since it is larger than the sum of its proper divisors (218054387).

31123200013 is a wasteful number, since it uses less digits than its factorization.

31123200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61307.

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

Adding to 31123200013 its reverse (31000232113), we get a palindrome (62123432126).

The spelling of 31123200013 in words is "thirty-one billion, one hundred twenty-three million, two hundred thousand, thirteen".