131502381 has 16 divisors (see below), whose sum is σ = 182456064. Its totient is φ = 84179264.

The previous prime is 131502379. The next prime is 131502383. The reversal of 131502381 is 183205131.

It is an interprime number because it is at equal distance from previous prime (131502379) and next prime (131502383).

It is not a de Polignac number, because 131502381 - 2¹ = 131502379 is a prime.

It is a super-2 number, since 2×131502381² = 34585752417338322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131502383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (11403504).

Almost surely, 2^131502381 is an apocalyptic number.

It is an amenable number.

131502381 is a deficient number, since it is larger than the sum of its proper divisors (50953683).

131502381 is a wasteful number, since it uses less digits than its factorization.

131502381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17700.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 131502381 is about 11467.4487572433. The cubic root of 131502381 is about 508.5237084187.

The spelling of 131502381 in words is "one hundred thirty-one million, five hundred two thousand, three hundred eighty-one".