131561711300 has 18 divisors (see below), whose sum is σ = 285488913738. Its totient is φ = 52624684480.

The previous prime is 131561711291. The next prime is 131561711329. The reversal of 131561711300 is 3117165131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1292690116 + 130269021184 = 35954^2 + 360928^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 657808457 + ... + 657808656.

Almost surely, 2^131561711300 is an apocalyptic number.

131561711300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131561711300 is an abundant number, since it is smaller than the sum of its proper divisors (153927202438).

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

131561711300 is a wasteful number, since it uses less digits than its factorization.

131561711300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315617127 (or 1315617120 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 29.

Adding to 131561711300 its reverse (3117165131), we get a palindrome (134678876431).

The spelling of 131561711300 in words is "one hundred thirty-one billion, five hundred sixty-one million, seven hundred eleven thousand, three hundred".