812137931119 has 2 divisors, whose sum is σ = 812137931120. Its totient is φ = 812137931118.

The previous prime is 812137931083. The next prime is 812137931237. The reversal of 812137931119 is 911139731218.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812137931119 is a prime.

It is a super-2 number, since 2×812137931119² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812137961119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406068965559 + 406068965560.

It is an arithmetic number, because the mean of its divisors is an integer number (406068965560).

Almost surely, 2^812137931119 is an apocalyptic number.

812137931119 is a deficient number, since it is larger than the sum of its proper divisors (1).

812137931119 is an equidigital number, since it uses as much as digits as its factorization.

812137931119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 46.

The spelling of 812137931119 in words is "eight hundred twelve billion, one hundred thirty-seven million, nine hundred thirty-one thousand, one hundred nineteen".