131431100 has 36 divisors (see below), whose sum is σ = 285924408. Its totient is φ = 52440000.

The previous prime is 131431099. The next prime is 131431109. The reversal of 131431100 is 1134131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131431109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44675 + ... + 47525.

Almost surely, 2^131431100 is an apocalyptic number.

131431100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131431100 is an abundant number, since it is smaller than the sum of its proper divisors (154493308).

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

131431100 is a wasteful number, since it uses less digits than its factorization.

131431100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326 (or 3319 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131431100 is about 11464.3403648008. The cubic root of 131431100 is about 508.4318098802.

Adding to 131431100 its reverse (1134131), we get a palindrome (132565231).

The spelling of 131431100 in words is "one hundred thirty-one million, four hundred thirty-one thousand, one hundred".