131351528 has 128 divisors (see below), whose sum is σ = 327352320. Its totient is φ = 47900160.

The previous prime is 131351513. The next prime is 131351531. The reversal of 131351528 is 825153131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131351528.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034201 + ... + 1034327.

It is an arithmetic number, because the mean of its divisors is an integer number (2557440).

Almost surely, 2^131351528 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 131351528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163676160).

131351528 is an abundant number, since it is smaller than the sum of its proper divisors (196000792).

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

131351528 is a wasteful number, since it uses less digits than its factorization.

131351528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 243 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 131351528 is about 11460.8694260078. The cubic root of 131351528 is about 508.3291829695.

The spelling of 131351528 in words is "one hundred thirty-one million, three hundred fifty-one thousand, five hundred twenty-eight".