312897707 has 2 divisors, whose sum is σ = 312897708. Its totient is φ = 312897706.

The previous prime is 312897701. The next prime is 312897751. The reversal of 312897707 is 707798213.

It is an a-pointer prime, because the next prime (312897751) can be obtained adding 312897707 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312897707 - 2²⁶ = 245788843 is a prime.

It is not a weakly prime, because it can be changed into another prime (312897701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156448853 + 156448854.

It is an arithmetic number, because the mean of its divisors is an integer number (156448854).

Almost surely, 2^312897707 is an apocalyptic number.

312897707 is a deficient number, since it is larger than the sum of its proper divisors (1).

312897707 is an equidigital number, since it uses as much as digits as its factorization.

312897707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 312897707 is about 17688.9148056064. The cubic root of 312897707 is about 678.8921602143.

The spelling of 312897707 in words is "three hundred twelve million, eight hundred ninety-seven thousand, seven hundred seven".