131319998 has 8 divisors (see below), whose sum is σ = 198930600. Its totient is φ = 65009800.

The previous prime is 131319997. The next prime is 131320009. The reversal of 131319998 is 899913131.

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 (131319997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324848 + ... + 325251.

It is an arithmetic number, because the mean of its divisors is an integer number (24866325).

Almost surely, 2^131319998 is an apocalyptic number.

131319998 is a deficient number, since it is larger than the sum of its proper divisors (67610602).

131319998 is a wasteful number, since it uses less digits than its factorization.

131319998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650202.

The product of its digits is 52488, while the sum is 44.

The square root of 131319998 is about 11459.4937933575. The cubic root of 131319998 is about 508.2885061130.

The spelling of 131319998 in words is "one hundred thirty-one million, three hundred nineteen thousand, nine hundred ninety-eight".