131361764 has 12 divisors (see below), whose sum is σ = 237810300. Its totient is φ = 63415968.

The previous prime is 131361761. The next prime is 131361773. The reversal of 131361764 is 467163131.

It can be written as a sum of positive squares in 2 ways, for example, as 96196864 + 35164900 = 9808^2 + 5930^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131361764.

It is not an unprimeable number, because it can be changed into a prime (131361761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566099 + ... + 566330.

It is an arithmetic number, because the mean of its divisors is an integer number (19817525).

Almost surely, 2^131361764 is an apocalyptic number.

It is an amenable number.

131361764 is a deficient number, since it is larger than the sum of its proper divisors (106448536).

131361764 is a wasteful number, since it uses less digits than its factorization.

131361764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132462 (or 1132460 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 131361764 is about 11461.3159802878. The cubic root of 131361764 is about 508.3423870345.

The spelling of 131361764 in words is "one hundred thirty-one million, three hundred sixty-one thousand, seven hundred sixty-four".