131430443 has 4 divisors (see below), whose sum is σ = 133281648. Its totient is φ = 129579240.

The previous prime is 131430437. The next prime is 131430457. The reversal of 131430443 is 344034131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344034131 = 7 ⋅49147733.

It is a cyclic number.

It is not a de Polignac number, because 131430443 - 2⁴ = 131430427 is a prime.

It is a super-2 number, since 2×131430443² = 34547922694352498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131430493) 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, 925496 + ... + 925637.

It is an arithmetic number, because the mean of its divisors is an integer number (33320412).

Almost surely, 2^131430443 is an apocalyptic number.

131430443 is a deficient number, since it is larger than the sum of its proper divisors (1851205).

131430443 is an equidigital number, since it uses as much as digits as its factorization.

131430443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851204.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131430443 is about 11464.3117106959. The cubic root of 131430443 is about 508.4309626930.

Adding to 131430443 its reverse (344034131), we get a palindrome (475464574).

The spelling of 131430443 in words is "one hundred thirty-one million, four hundred thirty thousand, four hundred forty-three".