131503998 has 8 divisors (see below), whose sum is σ = 263008008. Its totient is φ = 43834664.

The previous prime is 131503991. The next prime is 131504003. The reversal of 131503998 is 899305131.

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

131503998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131503991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10958661 + ... + 10958672.

It is an arithmetic number, because the mean of its divisors is an integer number (32876001).

Almost surely, 2^131503998 is an apocalyptic number.

131503998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131503998 is a wasteful number, since it uses less digits than its factorization.

131503998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21917338.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 131503998 is about 11467.5192609387. The cubic root of 131503998 is about 508.5257927396.

The spelling of 131503998 in words is "one hundred thirty-one million, five hundred three thousand, nine hundred ninety-eight".