131551904 has 48 divisors (see below), whose sum is σ = 294840000. Its totient is φ = 57192960.

The previous prime is 131551897. The next prime is 131551907. The reversal of 131551904 is 409155131.

It is not an unprimeable number, because it can be changed into a prime (131551907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29 + ... + 16220.

It is an arithmetic number, because the mean of its divisors is an integer number (6142500).

Almost surely, 2^131551904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131551904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147420000).

131551904 is an abundant number, since it is smaller than the sum of its proper divisors (163288096).

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

131551904 is a wasteful number, since it uses less digits than its factorization.

131551904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16293 (or 16285 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 131551904 is about 11469.6078398522. The cubic root of 131551904 is about 508.5875360563.

The spelling of 131551904 in words is "one hundred thirty-one million, five hundred fifty-one thousand, nine hundred four".