131330630644 has 18 divisors (see below), whose sum is σ = 238027014134. Its totient is φ = 63400992480.

The previous prime is 131330630617. The next prime is 131330630657. The reversal of 131330630644 is 446036033131.

It can be written as a sum of positive squares in 3 ways, for example, as 23344784100 + 107985846544 = 152790^2 + 328612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19516647 + ... + 19523374.

Almost surely, 2^131330630644 is an apocalyptic number.

It is an amenable number.

131330630644 is a deficient number, since it is larger than the sum of its proper divisors (106696383490).

131330630644 is a wasteful number, since it uses less digits than its factorization.

131330630644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39040083 (or 39040052 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 131330630644 its reverse (446036033131), we get a palindrome (577366663775).

The spelling of 131330630644 in words is "one hundred thirty-one billion, three hundred thirty million, six hundred thirty thousand, six hundred forty-four".