31122132300013 has 4 divisors (see below), whose sum is σ = 31122144703900. Its totient is φ = 31122119896128.

The previous prime is 31122132299989. The next prime is 31122132300043. The reversal of 31122132300013 is 31000323122113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12698232917764 + 18423899382249 = 3563458^2 + 4292307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31122132300013 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 (31122132300043) 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, 963438 + ... + 7948111.

It is an arithmetic number, because the mean of its divisors is an integer number (7780536175975).

Almost surely, 2^{31122132300013} is an apocalyptic number.

It is an amenable number.

31122132300013 is a deficient number, since it is larger than the sum of its proper divisors (12403887).

31122132300013 is an equidigital number, since it uses as much as digits as its factorization.

31122132300013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12403886.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31122132300013 its reverse (31000323122113), we get a palindrome (62122455422126).

The spelling of 31122132300013 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred thirty-two million, three hundred thousand, thirteen".