313891390 has 16 divisors (see below), whose sum is σ = 566164080. Its totient is φ = 125298880.

The previous prime is 313891379. The next prime is 313891393. The reversal of 313891390 is 93198313.

It is a super-2 number, since 2×313891390² = 197055609432264200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313891393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27055 + ... + 36874.

It is an arithmetic number, because the mean of its divisors is an integer number (35385255).

Almost surely, 2^313891390 is an apocalyptic number.

313891390 is a deficient number, since it is larger than the sum of its proper divisors (252272690).

313891390 is a wasteful number, since it uses less digits than its factorization.

313891390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64427.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 313891390 is about 17716.9802731730. The cubic root of 313891390 is about 679.6100633478.

The spelling of 313891390 in words is "three hundred thirteen million, eight hundred ninety-one thousand, three hundred ninety".