131551452 has 72 divisors (see below), whose sum is σ = 353366832. Its totient is φ = 42768000.

The previous prime is 131551447. The next prime is 131551463. The reversal of 131551452 is 254155131.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38202 + ... + 41502.

Almost surely, 2^131551452 is an apocalyptic number.

131551452 is a gapful number since it is divisible by the number (12) 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 131551452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176683416).

131551452 is an abundant number, since it is smaller than the sum of its proper divisors (221815380).

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

131551452 is a wasteful number, since it uses less digits than its factorization.

131551452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3347 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 131551452 is about 11469.5881355871. The cubic root of 131551452 is about 508.5869535693.

The spelling of 131551452 in words is "one hundred thirty-one million, five hundred fifty-one thousand, four hundred fifty-two".