812373137 has 2 divisors, whose sum is σ = 812373138. Its totient is φ = 812373136.

The previous prime is 812373131. The next prime is 812373187. The reversal of 812373137 is 731373218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 562448656 + 249924481 = 23716^2 + 15809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812373137 is a prime.

It is a super-2 number, since 2×812373137² = 1319900227438441538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 812373097 and 812373106.

It is not a weakly prime, because it can be changed into another prime (812373131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406186568 + 406186569.

It is an arithmetic number, because the mean of its divisors is an integer number (406186569).

Almost surely, 2^812373137 is an apocalyptic number.

It is an amenable number.

812373137 is a deficient number, since it is larger than the sum of its proper divisors (1).

812373137 is an equidigital number, since it uses as much as digits as its factorization.

812373137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 812373137 is about 28502.1602163766. The cubic root of 812373137 is about 933.0792207725.

The spelling of 812373137 in words is "eight hundred twelve million, three hundred seventy-three thousand, one hundred thirty-seven".