313131982 has 8 divisors (see below), whose sum is σ = 490119696. Its totient is φ = 149758752.

The previous prime is 313131979. The next prime is 313131983. The reversal of 313131982 is 289131313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313131983) 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, 3403563 + ... + 3403654.

It is an arithmetic number, because the mean of its divisors is an integer number (61264962).

Almost surely, 2^313131982 is an apocalyptic number.

313131982 is a deficient number, since it is larger than the sum of its proper divisors (176987714).

313131982 is a wasteful number, since it uses less digits than its factorization.

313131982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6807242.

The product of its digits is 3888, while the sum is 31.

The square root of 313131982 is about 17695.5356516834. The cubic root of 313131982 is about 679.0615529364.

The spelling of 313131982 in words is "three hundred thirteen million, one hundred thirty-one thousand, nine hundred eighty-two".