18431341 has 2 divisors, whose sum is σ = 18431342. Its totient is φ = 18431340.

The previous prime is 18431339. The next prime is 18431351. The reversal of 18431341 is 14313481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17388900 + 1042441 = 4170^2 + 1021^2 .

It is a cyclic number.

It is not a de Polignac number, because 18431341 - 2¹ = 18431339 is a prime.

Together with 18431339, it forms a pair of twin primes.

It is equal to p_1177090 and since 18431341 and 1177090 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18431351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9215670 + 9215671.

It is an arithmetic number, because the mean of its divisors is an integer number (9215671).

Almost surely, 2^18431341 is an apocalyptic number.

It is an amenable number.

18431341 is a deficient number, since it is larger than the sum of its proper divisors (1).

18431341 is an equidigital number, since it uses as much as digits as its factorization.

18431341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

The square root of 18431341 is about 4293.1737677387. The cubic root of 18431341 is about 264.1510317692.

The spelling of 18431341 in words is "eighteen million, four hundred thirty-one thousand, three hundred forty-one".