131171630 has 16 divisors (see below), whose sum is σ = 248536080. Its totient is φ = 49707072.

The previous prime is 131171603. The next prime is 131171647. The reversal of 131171630 is 36171131.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131171596 and 131171605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344999 + ... + 345378.

It is an arithmetic number, because the mean of its divisors is an integer number (15533505).

Almost surely, 2^131171630 is an apocalyptic number.

131171630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131171630 is a deficient number, since it is larger than the sum of its proper divisors (117364450).

131171630 is a wasteful number, since it uses less digits than its factorization.

131171630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690403.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 131171630 is about 11453.0183794491. The cubic root of 131171630 is about 508.0970090844.

The spelling of 131171630 in words is "one hundred thirty-one million, one hundred seventy-one thousand, six hundred thirty".