131522320100 has 36 divisors (see below), whose sum is σ = 293117049204. Its totient is φ = 51187063680.

The previous prime is 131522320009. The next prime is 131522320117. The reversal of 131522320100 is 1023225131.

It can be written as a sum of positive squares in 6 ways, for example, as 9026520064 + 122495800036 = 95008^2 + 349994^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17769587 + ... + 17776986.

Almost surely, 2^131522320100 is an apocalyptic number.

131522320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131522320100 is an abundant number, since it is smaller than the sum of its proper divisors (161594729104).

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

131522320100 is a wasteful number, since it uses less digits than its factorization.

131522320100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35546624 (or 35546617 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 131522320100 its reverse (1023225131), we get a palindrome (132545545231).

The spelling of 131522320100 in words is "one hundred thirty-one billion, five hundred twenty-two million, three hundred twenty thousand, one hundred".