131002443 has 24 divisors (see below), whose sum is σ = 222309360. Its totient is φ = 73287360.

The previous prime is 131002433. The next prime is 131002447. The reversal of 131002443 is 344200131.

It is not a de Polignac number, because 131002443 - 2¹⁰ = 131001419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131002447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49608 + ... + 52181.

It is an arithmetic number, because the mean of its divisors is an integer number (9262890).

Almost surely, 2^131002443 is an apocalyptic number.

131002443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131002443 is a deficient number, since it is larger than the sum of its proper divisors (91306917).

131002443 is a wasteful number, since it uses less digits than its factorization.

131002443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101819 (or 101816 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 131002443 is about 11445.6298647126. The cubic root of 131002443 is about 507.8784648913.

Adding to 131002443 its reverse (344200131), we get a palindrome (475202574).

The spelling of 131002443 in words is "one hundred thirty-one million, two thousand, four hundred forty-three".