312919051 has 4 divisors (see below), whose sum is σ = 331326072. Its totient is φ = 294512032.

The previous prime is 312919031. The next prime is 312919063. The reversal of 312919051 is 150919213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312919051 - 2⁹ = 312918539 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312919021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9203485 + ... + 9203518.

It is an arithmetic number, because the mean of its divisors is an integer number (82831518).

Almost surely, 2^312919051 is an apocalyptic number.

312919051 is a deficient number, since it is larger than the sum of its proper divisors (18407021).

312919051 is a wasteful number, since it uses less digits than its factorization.

312919051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18407020.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 312919051 is about 17689.5181110170. The cubic root of 312919051 is about 678.9075965103.

The spelling of 312919051 in words is "three hundred twelve million, nine hundred nineteen thousand, fifty-one".