312140377 has 2 divisors, whose sum is σ = 312140378. Its totient is φ = 312140376.

The previous prime is 312140363. The next prime is 312140401. The reversal of 312140377 is 773041213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308740041 + 3400336 = 17571^2 + 1844^2 .

It is a cyclic number.

It is not a de Polignac number, because 312140377 - 2²⁷ = 177922649 is a prime.

It is a super-2 number, since 2×312140377² = 194863229907404258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312140317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156070188 + 156070189.

It is an arithmetic number, because the mean of its divisors is an integer number (156070189).

Almost surely, 2^312140377 is an apocalyptic number.

It is an amenable number.

312140377 is a deficient number, since it is larger than the sum of its proper divisors (1).

312140377 is an equidigital number, since it uses as much as digits as its factorization.

312140377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 312140377 is about 17667.4949271254. The cubic root of 312140377 is about 678.3439930283.

The spelling of 312140377 in words is "three hundred twelve million, one hundred forty thousand, three hundred seventy-seven".