312477139 has 4 divisors (see below), whose sum is σ = 336513856. Its totient is φ = 288440424.

The previous prime is 312477107. The next prime is 312477223. The reversal of 312477139 is 931774213.

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 312477139 - 2⁵ = 312477107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312477098 and 312477107.

It is not an unprimeable number, because it can be changed into a prime (312477239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12018339 + ... + 12018364.

It is an arithmetic number, because the mean of its divisors is an integer number (84128464).

Almost surely, 2^312477139 is an apocalyptic number.

312477139 is a deficient number, since it is larger than the sum of its proper divisors (24036717).

312477139 is a wasteful number, since it uses less digits than its factorization.

312477139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24036716.

The product of its digits is 31752, while the sum is 37.

The square root of 312477139 is about 17677.0229111126. The cubic root of 312477139 is about 678.5878559316.

The spelling of 312477139 in words is "three hundred twelve million, four hundred seventy-seven thousand, one hundred thirty-nine".