131544520000 has 70 divisors (see below), whose sum is σ = 326187756818. Its totient is φ = 52617792000.

The previous prime is 131544519979. The next prime is 131544520013. The reversal of 131544520000 is 25445131.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 79844674624 + 51699845376 = 282568^2 + 227376^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1604307 + ... + 1684306.

Almost surely, 2^131544520000 is an apocalyptic number.

131544520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131544520000 is an abundant number, since it is smaller than the sum of its proper divisors (194643236818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131544520000 is an frugal number, since it uses more digits than its factorization.

131544520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288645 (or 3288620 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 131544520000 its reverse (25445131), we get a palindrome (131569965131).

The spelling of 131544520000 in words is "one hundred thirty-one billion, five hundred forty-four million, five hundred twenty thousand".