20708152331 has 2 divisors, whose sum is σ = 20708152332. Its totient is φ = 20708152330.

The previous prime is 20708152253. The next prime is 20708152337. The reversal of 20708152331 is 13325180702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20708152331 - 2²² = 20703958027 is a prime.

It is a super-2 number, since 2×20708152331² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20708152337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10354076165 + 10354076166.

It is an arithmetic number, because the mean of its divisors is an integer number (10354076166).

Almost surely, 2^20708152331 is an apocalyptic number.

20708152331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20708152331 is an equidigital number, since it uses as much as digits as its factorization.

20708152331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 20708152331 in words is "twenty billion, seven hundred eight million, one hundred fifty-two thousand, three hundred thirty-one".