312433042 has 4 divisors (see below), whose sum is σ = 468649566. Its totient is φ = 156216520.

The previous prime is 312433031. The next prime is 312433049. The reversal of 312433042 is 240334213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240334213 = 7 ⋅34333459.

It can be written as a sum of positive squares in only one way, i.e., 296838441 + 15594601 = 17229^2 + 3949^2 .

It is a super-2 number, since 2×312433042² = 195228811466747528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312433049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78108259 + ... + 78108262.

Almost surely, 2^312433042 is an apocalyptic number.

312433042 is a deficient number, since it is larger than the sum of its proper divisors (156216524).

312433042 is a wasteful number, since it uses less digits than its factorization.

312433042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156216523.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 312433042 is about 17675.7755699715. The cubic root of 312433042 is about 678.5559334934. Note that the first 3 decimals are identical.

Adding to 312433042 its reverse (240334213), we get a palindrome (552767255).

The spelling of 312433042 in words is "three hundred twelve million, four hundred thirty-three thousand, forty-two".