312428345 has 4 divisors (see below), whose sum is σ = 374914020. Its totient is φ = 249942672.

The previous prime is 312428341. The next prime is 312428377. The reversal of 312428345 is 543824213.

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 232379536 + 80048809 = 15244^2 + 8947^2 .

It is a cyclic number.

It is not a de Polignac number, because 312428345 - 2² = 312428341 is a prime.

It is a super-2 number, since 2×312428345² = 195222941518878050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312428341) 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, 31242830 + ... + 31242839.

It is an arithmetic number, because the mean of its divisors is an integer number (93728505).

Almost surely, 2^312428345 is an apocalyptic number.

It is an amenable number.

312428345 is a deficient number, since it is larger than the sum of its proper divisors (62485675).

312428345 is an equidigital number, since it uses as much as digits as its factorization.

312428345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62485674.

The product of its digits is 23040, while the sum is 32.

The square root of 312428345 is about 17675.6427040150. The cubic root of 312428345 is about 678.5525330921.

The spelling of 312428345 in words is "three hundred twelve million, four hundred twenty-eight thousand, three hundred forty-five".