131155443 has 40 divisors (see below), whose sum is σ = 201979008. Its totient is φ = 84779136.

The previous prime is 131155441. The next prime is 131155447. The reversal of 131155443 is 344551131.

It is a happy number.

131155443 is a `hidden beast` number, since 1 + 3 + 115 + 544 + 3 = 666.

It is not a de Polignac number, because 131155443 - 2¹ = 131155441 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (131155441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 588030 + ... + 588252.

Almost surely, 2^131155443 is an apocalyptic number.

131155443 is a deficient number, since it is larger than the sum of its proper divisors (70823565).

131155443 is a wasteful number, since it uses less digits than its factorization.

131155443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 416 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 131155443 is about 11452.3116880392. The cubic root of 131155443 is about 508.0761079576.

The spelling of 131155443 in words is "one hundred thirty-one million, one hundred fifty-five thousand, four hundred forty-three".