312042477 has 4 divisors (see below), whose sum is σ = 416056640. Its totient is φ = 208028316.

The previous prime is 312042457. The next prime is 312042481. The reversal of 312042477 is 774240213.

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, and also an emirpimes, since its reverse is a distinct semiprime: 774240213 = 3 ⋅258080071.

It is not a de Polignac number, because 312042477 - 2¹⁰ = 312041453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312042457) 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, 52007077 + ... + 52007082.

It is an arithmetic number, because the mean of its divisors is an integer number (104014160).

Almost surely, 2^312042477 is an apocalyptic number.

It is an amenable number.

312042477 is a deficient number, since it is larger than the sum of its proper divisors (104014163).

312042477 is a wasteful number, since it uses less digits than its factorization.

312042477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104014162.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 312042477 is about 17664.7240850232. The cubic root of 312042477 is about 678.2730667977.

The spelling of 312042477 in words is "three hundred twelve million, forty-two thousand, four hundred seventy-seven".