312797949 has 4 divisors (see below), whose sum is σ = 417063936. Its totient is φ = 208531964.

The previous prime is 312797923. The next prime is 312797971. The reversal of 312797949 is 949797213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312797949 - 2⁵ = 312797917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312747949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52132989 + ... + 52132994.

It is an arithmetic number, because the mean of its divisors is an integer number (104265984).

Almost surely, 2^312797949 is an apocalyptic number.

It is an amenable number.

312797949 is a deficient number, since it is larger than the sum of its proper divisors (104265987).

312797949 is a wasteful number, since it uses less digits than its factorization.

312797949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104265986.

The product of its digits is 857304, while the sum is 51.

The square root of 312797949 is about 17686.0947922372. The cubic root of 312797949 is about 678.8200044467.

The spelling of 312797949 in words is "three hundred twelve million, seven hundred ninety-seven thousand, nine hundred forty-nine".