131298387764 has 6 divisors (see below), whose sum is σ = 229772178594. Its totient is φ = 65649193880.

The previous prime is 131298387749. The next prime is 131298387767. The reversal of 131298387764 is 467783892131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130398987664 + 899400100 = 361108^2 + 29990^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131298387767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16412298467 + ... + 16412298474.

It is an arithmetic number, because the mean of its divisors is an integer number (38295363099).

Almost surely, 2^131298387764 is an apocalyptic number.

It is an amenable number.

131298387764 is a deficient number, since it is larger than the sum of its proper divisors (98473790830).

131298387764 is a wasteful number, since it uses less digits than its factorization.

131298387764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32824596945 (or 32824596943 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 59.

The spelling of 131298387764 in words is "one hundred thirty-one billion, two hundred ninety-eight million, three hundred eighty-seven thousand, seven hundred sixty-four".