131553443 has 4 divisors (see below), whose sum is σ = 150346800. Its totient is φ = 112760088.

The previous prime is 131553439. The next prime is 131553467. The reversal of 131553443 is 344355131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344355131 = 83 ⋅4148857.

It is not a de Polignac number, because 131553443 - 2² = 131553439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131553043) 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, 9396668 + ... + 9396681.

It is an arithmetic number, because the mean of its divisors is an integer number (37586700).

Almost surely, 2^131553443 is an apocalyptic number.

131553443 is a deficient number, since it is larger than the sum of its proper divisors (18793357).

131553443 is an equidigital number, since it uses as much as digits as its factorization.

131553443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18793356.

The product of its digits is 10800, while the sum is 29.

The square root of 131553443 is about 11469.6749300056. The cubic root of 131553443 is about 508.5895193373.

The spelling of 131553443 in words is "one hundred thirty-one million, five hundred fifty-three thousand, four hundred forty-three".