313263242 has 4 divisors (see below), whose sum is σ = 469894866. Its totient is φ = 156631620.

The previous prime is 313263239. The next prime is 313263281. The reversal of 313263242 is 242362313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242362313 = 157 ⋅1543709.

It can be written as a sum of positive squares in only one way, i.e., 270635401 + 42627841 = 16451^2 + 6529^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78315809 + ... + 78315812.

Almost surely, 2^313263242 is an apocalyptic number.

313263242 is a deficient number, since it is larger than the sum of its proper divisors (156631624).

313263242 is a wasteful number, since it uses less digits than its factorization.

313263242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156631623.

The product of its digits is 5184, while the sum is 26.

The square root of 313263242 is about 17699.2441081533. The cubic root of 313263242 is about 679.1564236544.

The spelling of 313263242 in words is "three hundred thirteen million, two hundred sixty-three thousand, two hundred forty-two".