131240100 has 36 divisors (see below), whose sum is σ = 379722224. Its totient is φ = 34997280.

The previous prime is 131240099. The next prime is 131240113. The reversal of 131240100 is 1042131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218434 + ... + 219033.

Almost surely, 2^131240100 is an apocalyptic number.

131240100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131240100 is an abundant number, since it is smaller than the sum of its proper divisors (248482124).

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

131240100 is a wasteful number, since it uses less digits than its factorization.

131240100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437484 (or 437477 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 131240100 is about 11456.0071578190. The cubic root of 131240100 is about 508.1854005319.

Adding to 131240100 its reverse (1042131), we get a palindrome (132282231).

The spelling of 131240100 in words is "one hundred thirty-one million, two hundred forty thousand, one hundred".