131731732 has 48 divisors (see below), whose sum is σ = 257019840. Its totient is φ = 59067360.

The previous prime is 131731727. The next prime is 131731763. The reversal of 131731732 is 237137131.

It is a self number, because there is not a number n which added to its sum of digits gives 131731732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580203 + ... + 580429.

It is an arithmetic number, because the mean of its divisors is an integer number (5354580).

Almost surely, 2^131731732 is an apocalyptic number.

It is an amenable number.

131731732 is a deficient number, since it is larger than the sum of its proper divisors (125288108).

131731732 is a wasteful number, since it uses less digits than its factorization.

131731732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 349 counting only the distinct ones).

The product of its digits is 2646, while the sum is 28.

The square root of 131731732 is about 11477.4444890838. Note that the first 4 decimals coincide. The cubic root of 131731732 is about 508.8191724791.

Adding to 131731732 its reverse (237137131), we get a palindrome (368868863).

The spelling of 131731732 in words is "one hundred thirty-one million, seven hundred thirty-one thousand, seven hundred thirty-two".