313349138 has 4 divisors (see below), whose sum is σ = 470023710. Its totient is φ = 156674568.

The previous prime is 313349129. The next prime is 313349149. The reversal of 313349138 is 831943313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831943313 = 599 ⋅1388887.

It can be written as a sum of positive squares in only one way, i.e., 274995889 + 38353249 = 16583^2 + 6193^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313349098 and 313349107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78337283 + ... + 78337286.

Almost surely, 2^313349138 is an apocalyptic number.

313349138 is a deficient number, since it is larger than the sum of its proper divisors (156674572).

313349138 is a wasteful number, since it uses less digits than its factorization.

313349138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156674571.

The product of its digits is 23328, while the sum is 35.

The square root of 313349138 is about 17701.6704861434. The cubic root of 313349138 is about 679.2184923145.

The spelling of 313349138 in words is "three hundred thirteen million, three hundred forty-nine thousand, one hundred thirty-eight".