131721674 has 16 divisors (see below), whose sum is σ = 226464000. Its totient is φ = 56288304.

The previous prime is 131721671. The next prime is 131721701. The reversal of 131721674 is 476127131.

It is a self number, because there is not a number n which added to its sum of digits gives 131721674.

It is not an unprimeable number, because it can be changed into a prime (131721671) 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 7 ways as a sum of consecutive naturals, for example, 8594 + ... + 18365.

It is an arithmetic number, because the mean of its divisors is an integer number (14154000).

Almost surely, 2^131721674 is an apocalyptic number.

131721674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131721674 is a deficient number, since it is larger than the sum of its proper divisors (94742326).

131721674 is a wasteful number, since it uses less digits than its factorization.

131721674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27317.

The product of its digits is 7056, while the sum is 32.

The square root of 131721674 is about 11477.0063169801. The cubic root of 131721674 is about 508.8062223381.

The spelling of 131721674 in words is "one hundred thirty-one million, seven hundred twenty-one thousand, six hundred seventy-four".