131996998 has 8 divisors (see below), whose sum is σ = 226280592. Its totient is φ = 56570136.

The previous prime is 131996989. The next prime is 131997013. The reversal of 131996998 is 899699131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4714165 + ... + 4714192.

It is an arithmetic number, because the mean of its divisors is an integer number (28285074).

Almost surely, 2^131996998 is an apocalyptic number.

131996998 is a deficient number, since it is larger than the sum of its proper divisors (94283594).

131996998 is an equidigital number, since it uses as much as digits as its factorization.

131996998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9428366.

The product of its digits is 944784, while the sum is 55.

The square root of 131996998 is about 11488.9946470525. The cubic root of 131996998 is about 509.1604770596.

The spelling of 131996998 in words is "one hundred thirty-one million, nine hundred ninety-six thousand, nine hundred ninety-eight".