131662004 has 6 divisors (see below), whose sum is σ = 230408514. Its totient is φ = 65831000.

The previous prime is 131661983. The next prime is 131662007. The reversal of 131662004 is 400266131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 131102500 + 559504 = 11450^2 + 748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131662007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16457747 + ... + 16457754.

It is an arithmetic number, because the mean of its divisors is an integer number (38401419).

Almost surely, 2^131662004 is an apocalyptic number.

It is an amenable number.

131662004 is a deficient number, since it is larger than the sum of its proper divisors (98746510).

131662004 is a wasteful number, since it uses less digits than its factorization.

131662004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32915505 (or 32915503 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 131662004 is about 11474.4064770253. The cubic root of 131662004 is about 508.7293808892.

The spelling of 131662004 in words is "one hundred thirty-one million, six hundred sixty-two thousand, four".