313113133442 has 4 divisors (see below), whose sum is σ = 469669700166. Its totient is φ = 156556566720.

The previous prime is 313113133427. The next prime is 313113133451. The reversal of 313113133442 is 244331311313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244331311313 = 61 ⋅4005431333.

It can be written as a sum of positive squares in only one way, i.e., 204431483881 + 108681649561 = 452141^2 + 329669^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78278283359 + ... + 78278283362.

Almost surely, 2^313113133442 is an apocalyptic number.

313113133442 is a deficient number, since it is larger than the sum of its proper divisors (156556566724).

313113133442 is a wasteful number, since it uses less digits than its factorization.

313113133442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156556566723.

The product of its digits is 7776, while the sum is 29.

Adding to 313113133442 its reverse (244331311313), we get a palindrome (557444444755).

The spelling of 313113133442 in words is "three hundred thirteen billion, one hundred thirteen million, one hundred thirty-three thousand, four hundred forty-two".