131977924 has 24 divisors (see below), whose sum is σ = 252237888. Its totient is φ = 60053280.

The previous prime is 131977921. The next prime is 131977949. The reversal of 131977924 is 429779131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131977921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14182 + ... + 21565.

It is an arithmetic number, because the mean of its divisors is an integer number (10509912).

Almost surely, 2^131977924 is an apocalyptic number.

It is an amenable number.

131977924 is a deficient number, since it is larger than the sum of its proper divisors (120259964).

131977924 is a wasteful number, since it uses less digits than its factorization.

131977924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35835 (or 35833 counting only the distinct ones).

The product of its digits is 95256, while the sum is 43.

The square root of 131977924 is about 11488.1645183206. The cubic root of 131977924 is about 509.1359507574.

The spelling of 131977924 in words is "one hundred thirty-one million, nine hundred seventy-seven thousand, nine hundred twenty-four".