171431980 has 36 divisors (see below), whose sum is σ = 364156128. Its totient is φ = 67791360.

The previous prime is 171431977. The next prime is 171432007. The reversal of 171431980 is 89134171.

171431980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187725 + ... + 188635.

It is an arithmetic number, because the mean of its divisors is an integer number (10115448).

Almost surely, 2^171431980 is an apocalyptic number.

171431980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171431980 is an abundant number, since it is smaller than the sum of its proper divisors (192724148).

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

171431980 is an equidigital number, since it uses as much as digits as its factorization.

171431980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 171431980 is about 13093.2035804840. The cubic root of 171431980 is about 555.5169060816.

The spelling of 171431980 in words is "one hundred seventy-one million, four hundred thirty-one thousand, nine hundred eighty".