312725069 has 4 divisors (see below), whose sum is σ = 318625596. Its totient is φ = 306824544.

The previous prime is 312725059. The next prime is 312725099. The reversal of 312725069 is 960527213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 194742025 + 117983044 = 13955^2 + 10862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312725069 is a prime.

It is a super-2 number, since 2×312725069² = 195593937562109522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312725029) 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, 2950184 + ... + 2950289.

It is an arithmetic number, because the mean of its divisors is an integer number (79656399).

Almost surely, 2^312725069 is an apocalyptic number.

It is an amenable number.

312725069 is a deficient number, since it is larger than the sum of its proper divisors (5900527).

312725069 is an equidigital number, since it uses as much as digits as its factorization.

312725069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900526.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 312725069 is about 17684.0342965060. The cubic root of 312725069 is about 678.7672800551.

The spelling of 312725069 in words is "three hundred twelve million, seven hundred twenty-five thousand, sixty-nine".