131465400 has 96 divisors (see below), whose sum is σ = 444614400. Its totient is φ = 31868800.

The previous prime is 131465339. The next prime is 131465407. The reversal of 131465400 is 4564131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131465407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3360 + ... + 16559.

It is an arithmetic number, because the mean of its divisors is an integer number (4631400).

Almost surely, 2^131465400 is an apocalyptic number.

131465400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131465400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222307200).

131465400 is an abundant number, since it is smaller than the sum of its proper divisors (313149000).

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

131465400 is a wasteful number, since it uses less digits than its factorization.

131465400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19949 (or 19940 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 131465400 is about 11465.8362102378. The cubic root of 131465400 is about 508.4760350655.

The spelling of 131465400 in words is "one hundred thirty-one million, four hundred sixty-five thousand, four hundred".