313121193 has 16 divisors (see below), whose sum is σ = 520513536. Its totient is φ = 162660240.

The previous prime is 313121183. The next prime is 313121203. The reversal of 313121193 is 391121313.

It is an interprime number because it is at equal distance from previous prime (313121183) and next prime (313121203).

It is not a de Polignac number, because 313121193 - 2¹⁰ = 313120169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313121143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677521 + ... + 677982.

It is an arithmetic number, because the mean of its divisors is an integer number (32532096).

Almost surely, 2^313121193 is an apocalyptic number.

313121193 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

313121193 is a deficient number, since it is larger than the sum of its proper divisors (207392343).

313121193 is a wasteful number, since it uses less digits than its factorization.

313121193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355524.

The product of its digits is 486, while the sum is 24.

The square root of 313121193 is about 17695.2307981558. The cubic root of 313121193 is about 679.0537537977.

The spelling of 313121193 in words is "three hundred thirteen million, one hundred twenty-one thousand, one hundred ninety-three".