231411143 has 2 divisors, whose sum is σ = 231411144. Its totient is φ = 231411142.

The previous prime is 231411133. The next prime is 231411149. The reversal of 231411143 is 341114132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231411143 - 2¹⁴ = 231394759 is a prime.

It is a super-2 number, since 2×231411143² = 107102234209132898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231411149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115705571 + 115705572.

It is an arithmetic number, because the mean of its divisors is an integer number (115705572).

Almost surely, 2^231411143 is an apocalyptic number.

231411143 is a deficient number, since it is larger than the sum of its proper divisors (1).

231411143 is an equidigital number, since it uses as much as digits as its factorization.

231411143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 231411143 is about 15212.2037522510. The cubic root of 231411143 is about 613.9430524696.

Adding to 231411143 its reverse (341114132), we get a palindrome (572525275).

The spelling of 231411143 in words is "two hundred thirty-one million, four hundred eleven thousand, one hundred forty-three".