20590681031 has 2 divisors, whose sum is σ = 20590681032. Its totient is φ = 20590681030.

The previous prime is 20590680991. The next prime is 20590681049. The reversal of 20590681031 is 13018609502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20590681031 is a prime.

It is a super-2 number, since 2×20590681031² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 20590680982 and 20590681000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20590681081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10295340515 + 10295340516.

It is an arithmetic number, because the mean of its divisors is an integer number (10295340516).

Almost surely, 2^20590681031 is an apocalyptic number.

20590681031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20590681031 is an equidigital number, since it uses as much as digits as its factorization.

20590681031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 20590681031 in words is "twenty billion, five hundred ninety million, six hundred eighty-one thousand, thirty-one".