20313084251 has 2 divisors, whose sum is σ = 20313084252. Its totient is φ = 20313084250.

The previous prime is 20313084229. The next prime is 20313084257. The reversal of 20313084251 is 15248031302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20313084251 - 2¹⁰ = 20313083227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20313084257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156542125 + 10156542126.

It is an arithmetic number, because the mean of its divisors is an integer number (10156542126).

Almost surely, 2^20313084251 is an apocalyptic number.

20313084251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313084251 is an equidigital number, since it uses as much as digits as its factorization.

20313084251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 20313084251 in words is "twenty billion, three hundred thirteen million, eighty-four thousand, two hundred fifty-one".