313131194 has 16 divisors (see below), whose sum is σ = 503625600. Its totient is φ = 145489344.

The previous prime is 313131193. The next prime is 313131251. The reversal of 313131194 is 491131313.

It is a super-2 number, since 2×313131194² = 196102289311731272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313131193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55604 + ... + 60975.

It is an arithmetic number, because the mean of its divisors is an integer number (31476600).

Almost surely, 2^313131194 is an apocalyptic number.

313131194 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

313131194 is a deficient number, since it is larger than the sum of its proper divisors (190494406).

313131194 is a wasteful number, since it uses less digits than its factorization.

313131194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116677.

The product of its digits is 972, while the sum is 26.

The square root of 313131194 is about 17695.5133861666. The cubic root of 313131194 is about 679.0609833140.

The spelling of 313131194 in words is "three hundred thirteen million, one hundred thirty-one thousand, one hundred ninety-four".