20312650650531 has 4 divisors (see below), whose sum is σ = 27083534200712. Its totient is φ = 13541767100352.

The previous prime is 20312650650527. The next prime is 20312650650563. The reversal of 20312650650531 is 13505605621302.

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

It is not a de Polignac number, because 20312650650531 - 2² = 20312650650527 is a prime.

It is a super-2 number, since 2×20312650650531² (a number of 27 digits) contains 22 as substring.

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 20312650650531.

It is not an unprimeable number, because it can be changed into a prime (20312650650571) 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, 3385441775086 + ... + 3385441775091.

It is an arithmetic number, because the mean of its divisors is an integer number (6770883550178).

Almost surely, 2^{20312650650531} is an apocalyptic number.

20312650650531 is a deficient number, since it is larger than the sum of its proper divisors (6770883550181).

20312650650531 is an equidigital number, since it uses as much as digits as its factorization.

20312650650531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770883550180.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 20312650650531 in words is "twenty trillion, three hundred twelve billion, six hundred fifty million, six hundred fifty thousand, five hundred thirty-one".