312385407 has 4 divisors (see below), whose sum is σ = 416513880. Its totient is φ = 208256936.

The previous prime is 312385399. The next prime is 312385417. The reversal of 312385407 is 704583213.

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 312385407 - 2³ = 312385399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312385417) 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, 52064232 + ... + 52064237.

It is an arithmetic number, because the mean of its divisors is an integer number (104128470).

Almost surely, 2^312385407 is an apocalyptic number.

312385407 is a deficient number, since it is larger than the sum of its proper divisors (104128473).

312385407 is a wasteful number, since it uses less digits than its factorization.

312385407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104128472.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 312385407 is about 17674.4280529810. The cubic root of 312385407 is about 678.5214464723.

The spelling of 312385407 in words is "three hundred twelve million, three hundred eighty-five thousand, four hundred seven".