20312626431311 has 4 divisors (see below), whose sum is σ = 20313180292632. Its totient is φ = 20312072569992.

The previous prime is 20312626431301. The next prime is 20312626431347. The reversal of 20312626431311 is 11313462621302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20312626431311 - 2²² = 20312622237007 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 (20312626431301) 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, 276875645 + ... + 276948998.

It is an arithmetic number, because the mean of its divisors is an integer number (5078295073158).

Almost surely, 2^{20312626431311} is an apocalyptic number.

20312626431311 is a deficient number, since it is larger than the sum of its proper divisors (553861321).

20312626431311 is an equidigital number, since it uses as much as digits as its factorization.

20312626431311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553861320.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 20312626431311 in words is "twenty trillion, three hundred twelve billion, six hundred twenty-six million, four hundred thirty-one thousand, three hundred eleven".