312494437 has 2 divisors, whose sum is σ = 312494438. Its totient is φ = 312494436.

The previous prime is 312494431. The next prime is 312494447. The reversal of 312494437 is 734494213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241833601 + 70660836 = 15551^2 + 8406^2 .

It is a cyclic number.

It is not a de Polignac number, because 312494437 - 2²³ = 304105829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312494396 and 312494405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312494431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156247218 + 156247219.

It is an arithmetic number, because the mean of its divisors is an integer number (156247219).

Almost surely, 2^312494437 is an apocalyptic number.

It is an amenable number.

312494437 is a deficient number, since it is larger than the sum of its proper divisors (1).

312494437 is an equidigital number, since it uses as much as digits as its factorization.

312494437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 312494437 is about 17677.5121835625. The cubic root of 312494437 is about 678.6003773768.

The spelling of 312494437 in words is "three hundred twelve million, four hundred ninety-four thousand, four hundred thirty-seven".