20620512331 has 8 divisors (see below), whose sum is σ = 20972793600. Its totient is φ = 20268323880.

The previous prime is 20620512307. The next prime is 20620512343. The reversal of 20620512331 is 13321502602.

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 20620512331 - 2⁹ = 20620511819 is a prime.

It is a super-2 number, since 2×20620512331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20620512296 and 20620512305.

It is not an unprimeable number, because it can be changed into a prime (20620512431) 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, 540826 + ... + 577696.

It is an arithmetic number, because the mean of its divisors is an integer number (2621599200).

Almost surely, 2^20620512331 is an apocalyptic number.

20620512331 is a deficient number, since it is larger than the sum of its proper divisors (352281269).

20620512331 is an equidigital number, since it uses as much as digits as its factorization.

20620512331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46409.

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 20620512331 in words is "twenty billion, six hundred twenty million, five hundred twelve thousand, three hundred thirty-one".