20464090331 has 2 divisors, whose sum is σ = 20464090332. Its totient is φ = 20464090330.

The previous prime is 20464090303. The next prime is 20464090337. The reversal of 20464090331 is 13309046402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20464090331 - 2¹⁰ = 20464089307 is a prime.

It is a super-2 number, since 2×20464090331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20464090337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10232045165 + 10232045166.

It is an arithmetic number, because the mean of its divisors is an integer number (10232045166).

Almost surely, 2^20464090331 is an apocalyptic number.

20464090331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20464090331 is an equidigital number, since it uses as much as digits as its factorization.

20464090331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 20464090331 in words is "twenty billion, four hundred sixty-four million, ninety thousand, three hundred thirty-one".