312443113 has 4 divisors (see below), whose sum is σ = 312550228. Its totient is φ = 312336000.

The previous prime is 312443107. The next prime is 312443137. The reversal of 312443113 is 311344213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109893289 + 202549824 = 10483^2 + 14232^2 .

It is a cyclic number.

It is not a de Polignac number, because 312443113 - 2²¹ = 310345961 is a prime.

It is a super-2 number, since 2×312443113² = 195241397722261538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312443143) 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, 49056 + ... + 55057.

It is an arithmetic number, because the mean of its divisors is an integer number (78137557).

Almost surely, 2^312443113 is an apocalyptic number.

It is an amenable number.

312443113 is a deficient number, since it is larger than the sum of its proper divisors (107115).

312443113 is a wasteful number, since it uses less digits than its factorization.

312443113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107114.

The product of its digits is 864, while the sum is 22.

The square root of 312443113 is about 17676.0604490933. The cubic root of 312443113 is about 678.5632242965.

Adding to 312443113 its reverse (311344213), we get a palindrome (623787326).

The spelling of 312443113 in words is "three hundred twelve million, four hundred forty-three thousand, one hundred thirteen".