812373131 has 2 divisors, whose sum is σ = 812373132. Its totient is φ = 812373130.

The previous prime is 812373113. The next prime is 812373137. The reversal of 812373131 is 131373218.

812373131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (812373113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 812373131 - 2¹⁰ = 812372107 is a prime.

It is a super-2 number, since 2×812373131² = 1319900207941486322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 812373094 and 812373103.

It is not a weakly prime, because it can be changed into another prime (812373137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406186565 + 406186566.

It is an arithmetic number, because the mean of its divisors is an integer number (406186566).

Almost surely, 2^812373131 is an apocalyptic number.

812373131 is a deficient number, since it is larger than the sum of its proper divisors (1).

812373131 is an equidigital number, since it uses as much as digits as its factorization.

812373131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 812373131 is about 28502.1601111214. The cubic root of 812373131 is about 933.0792184754.

The spelling of 812373131 in words is "eight hundred twelve million, three hundred seventy-three thousand, one hundred thirty-one".