313531947 has 12 divisors (see below), whose sum is σ = 456888744. Its totient is φ = 207170880.

The previous prime is 313531943. The next prime is 313531951. The reversal of 313531947 is 749135313.

313531947 is a `hidden beast` number, since 31 + 3 + 531 + 94 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (313531943) and next prime (313531951).

It is not a de Polignac number, because 313531947 - 2² = 313531943 is a prime.

It is a super-2 number, since 2×313531947² = 196604563579221618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313531943) 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 11 ways as a sum of consecutive naturals, for example, 153129 + ... + 155162.

It is an arithmetic number, because the mean of its divisors is an integer number (38074062).

Almost surely, 2^313531947 is an apocalyptic number.

313531947 is a deficient number, since it is larger than the sum of its proper divisors (143356797).

313531947 is a wasteful number, since it uses less digits than its factorization.

313531947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308410 (or 308407 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 313531947 is about 17706.8333419615. The cubic root of 313531947 is about 679.3505527965.

The spelling of 313531947 in words is "three hundred thirteen million, five hundred thirty-one thousand, nine hundred forty-seven".