312303623 has 4 divisors (see below), whose sum is σ = 313090680. Its totient is φ = 311516568.

The previous prime is 312303619. The next prime is 312303661. The reversal of 312303623 is 326303213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326303213 = 61 ⋅5349233.

It is a cyclic number.

It is not a de Polignac number, because 312303623 - 2² = 312303619 is a prime.

It is a super-2 number, since 2×312303623² = 195067105877852258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312302623) 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, 392933 + ... + 393726.

It is an arithmetic number, because the mean of its divisors is an integer number (78272670).

Almost surely, 2^312303623 is an apocalyptic number.

312303623 is a deficient number, since it is larger than the sum of its proper divisors (787057).

312303623 is an equidigital number, since it uses as much as digits as its factorization.

312303623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787056.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 312303623 is about 17672.1142764526. The cubic root of 312303623 is about 678.4622279129.

Adding to 312303623 its reverse (326303213), we get a palindrome (638606836).

The spelling of 312303623 in words is "three hundred twelve million, three hundred three thousand, six hundred twenty-three".