131665652 has 6 divisors (see below), whose sum is σ = 230414898. Its totient is φ = 65832824.

The previous prime is 131665609. The next prime is 131665669. The reversal of 131665652 is 256566131.

It can be written as a sum of positive squares in only one way, i.e., 130736356 + 929296 = 11434^2 + 964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16458203 + ... + 16458210.

It is an arithmetic number, because the mean of its divisors is an integer number (38402483).

Almost surely, 2^131665652 is an apocalyptic number.

It is an amenable number.

131665652 is a deficient number, since it is larger than the sum of its proper divisors (98749246).

131665652 is a wasteful number, since it uses less digits than its factorization.

131665652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32916417 (or 32916415 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 131665652 is about 11474.5654383946. The cubic root of 131665652 is about 508.7340793534.

The spelling of 131665652 in words is "one hundred thirty-one million, six hundred sixty-five thousand, six hundred fifty-two".