312513745 has 8 divisors (see below), whose sum is σ = 375114816. Its totient is φ = 249945456.

The previous prime is 312513743. The next prime is 312513749. The reversal of 312513745 is 547315213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312513745 - 2¹ = 312513743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312513743) 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 7 ways as a sum of consecutive naturals, for example, 25044 + ... + 35386.

It is an arithmetic number, because the mean of its divisors is an integer number (46889352).

Almost surely, 2^312513745 is an apocalyptic number.

It is an amenable number.

312513745 is a deficient number, since it is larger than the sum of its proper divisors (62601071).

312513745 is a wasteful number, since it uses less digits than its factorization.

312513745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16391.

The product of its digits is 12600, while the sum is 31.

The square root of 312513745 is about 17678.0582926972. The cubic root of 312513745 is about 678.6143532482.

Adding to 312513745 its reverse (547315213), we get a palindrome (859828958).

The spelling of 312513745 in words is "three hundred twelve million, five hundred thirteen thousand, seven hundred forty-five".