313625881 has 4 divisors (see below), whose sum is σ = 316557072. Its totient is φ = 310694692.

The previous prime is 313625863. The next prime is 313625891. The reversal of 313625881 is 188526313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188526313 = 6823 ⋅27631.

It is a cyclic number.

It is not a de Polignac number, because 313625881 - 2⁹ = 313625369 is a prime.

It is a super-2 number, since 2×313625881² = 196722386466052322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313625881.

It is not an unprimeable number, because it can be changed into a prime (313625821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465435 + ... + 1465648.

It is an arithmetic number, because the mean of its divisors is an integer number (79139268).

Almost surely, 2^313625881 is an apocalyptic number.

It is an amenable number.

313625881 is a deficient number, since it is larger than the sum of its proper divisors (2931191).

313625881 is a wasteful number, since it uses less digits than its factorization.

313625881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931190.

The product of its digits is 34560, while the sum is 37.

The square root of 313625881 is about 17709.4856221179. The cubic root of 313625881 is about 679.4183903737.

The spelling of 313625881 in words is "three hundred thirteen million, six hundred twenty-five thousand, eight hundred eighty-one".