312703489 has 4 divisors (see below), whose sum is σ = 357375424. Its totient is φ = 268031556.

The previous prime is 312703487. The next prime is 312703493. The reversal of 312703489 is 984307213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984307213 = 41 ⋅24007493.

It is a cyclic number.

It is not a de Polignac number, because 312703489 - 2¹ = 312703487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312703487) 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, 22335957 + ... + 22335970.

It is an arithmetic number, because the mean of its divisors is an integer number (89343856).

Almost surely, 2^312703489 is an apocalyptic number.

It is an amenable number.

312703489 is a deficient number, since it is larger than the sum of its proper divisors (44671935).

312703489 is an equidigital number, since it uses as much as digits as its factorization.

312703489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44671934.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 312703489 is about 17683.4241310895. The cubic root of 312703489 is about 678.7516666230.

The spelling of 312703489 in words is "three hundred twelve million, seven hundred three thousand, four hundred eighty-nine".