19976959031 has 2 divisors, whose sum is σ = 19976959032. Its totient is φ = 19976959030.

The previous prime is 19976959019. The next prime is 19976959033. The reversal of 19976959031 is 13095967991.

It is a strong prime.

It is an emirp because it is prime and its reverse (13095967991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19976959031 is a prime.

It is a super-2 number, since 2×19976959031² (a number of 21 digits) contains 22 as substring.

Together with 19976959033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19976959033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9988479515 + 9988479516.

It is an arithmetic number, because the mean of its divisors is an integer number (9988479516).

Almost surely, 2^19976959031 is an apocalyptic number.

19976959031 is a deficient number, since it is larger than the sum of its proper divisors (1).

19976959031 is an equidigital number, since it uses as much as digits as its factorization.

19976959031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4133430, while the sum is 59.

The spelling of 19976959031 in words is "nineteen billion, nine hundred seventy-six million, nine hundred fifty-nine thousand, thirty-one".