20593278931 has 2 divisors, whose sum is σ = 20593278932. Its totient is φ = 20593278930.

The previous prime is 20593278869. The next prime is 20593279037. The reversal of 20593278931 is 13987239502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20593278931 - 2⁷ = 20593278803 is a prime.

It is a super-2 number, since 2×20593278931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20593278031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10296639465 + 10296639466.

It is an arithmetic number, because the mean of its divisors is an integer number (10296639466).

Almost surely, 2^20593278931 is an apocalyptic number.

20593278931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20593278931 is an equidigital number, since it uses as much as digits as its factorization.

20593278931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 20593278931 in words is "twenty billion, five hundred ninety-three million, two hundred seventy-eight thousand, nine hundred thirty-one".