312354943 has 2 divisors, whose sum is σ = 312354944. Its totient is φ = 312354942.

The previous prime is 312354919. The next prime is 312354947. The reversal of 312354943 is 349453213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312354943 - 2⁹ = 312354431 is a prime.

It is a super-2 number, since 2×312354943² = 195131220833066498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312354899 and 312354908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312354947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156177471 + 156177472.

It is an arithmetic number, because the mean of its divisors is an integer number (156177472).

Almost surely, 2^312354943 is an apocalyptic number.

312354943 is a deficient number, since it is larger than the sum of its proper divisors (1).

312354943 is an equidigital number, since it uses as much as digits as its factorization.

312354943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 34.

The square root of 312354943 is about 17673.5662219033. The cubic root of 312354943 is about 678.4993891580.

The spelling of 312354943 in words is "three hundred twelve million, three hundred fifty-four thousand, nine hundred forty-three".