131539302 has 128 divisors (see below), whose sum is σ = 329443200. Its totient is φ = 39191040.

The previous prime is 131539301. The next prime is 131539307. The reversal of 131539302 is 203935131.

It is a happy number.

It is a super-3 number, since 3×131539302³ (a number of 25 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131539301) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2156352 + ... + 2156412.

It is an arithmetic number, because the mean of its divisors is an integer number (2573775).

Almost surely, 2^131539302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131539302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164721600).

131539302 is an abundant number, since it is smaller than the sum of its proper divisors (197903898).

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

131539302 is an equidigital number, since it uses as much as digits as its factorization.

131539302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 27.

The square root of 131539302 is about 11469.0584617919. The cubic root of 131539302 is about 508.5712955089.

It can be divided in two parts, 131539 and 302, that added together give a triangular number (131841 = T₅₁₃).

The spelling of 131539302 in words is "one hundred thirty-one million, five hundred thirty-nine thousand, three hundred two".