131527643 has 4 divisors (see below), whose sum is σ = 141645168. Its totient is φ = 121410120.

The previous prime is 131527603. The next prime is 131527661. The reversal of 131527643 is 346725131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131527643 - 2⁸ = 131527387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131527603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5058743 + ... + 5058768.

It is an arithmetic number, because the mean of its divisors is an integer number (35411292).

Almost surely, 2^131527643 is an apocalyptic number.

131527643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131527643 is a deficient number, since it is larger than the sum of its proper divisors (10117525).

131527643 is a wasteful number, since it uses less digits than its factorization.

131527643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10117524.

The product of its digits is 15120, while the sum is 32.

The square root of 131527643 is about 11468.5501699212. The cubic root of 131527643 is about 508.5562693080.

The spelling of 131527643 in words is "one hundred thirty-one million, five hundred twenty-seven thousand, six hundred forty-three".