131699580 has 24 divisors (see below), whose sum is σ = 368758992. Its totient is φ = 35119872.

The previous prime is 131699569. The next prime is 131699591. The reversal of 131699580 is 85996131.

It is an interprime number because it is at equal distance from previous prime (131699569) and next prime (131699591).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1097437 + ... + 1097556.

It is an arithmetic number, because the mean of its divisors is an integer number (15364958).

Almost surely, 2^131699580 is an apocalyptic number.

131699580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131699580 is an abundant number, since it is smaller than the sum of its proper divisors (237059412).

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

131699580 is a wasteful number, since it uses less digits than its factorization.

131699580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195005 (or 2195003 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 131699580 is about 11476.0437433813. The cubic root of 131699580 is about 508.7777729749. Note that the first 5 decimals are identical.

The spelling of 131699580 in words is "one hundred thirty-one million, six hundred ninety-nine thousand, five hundred eighty".