23431143 has 4 divisors (see below), whose sum is σ = 31241528. Its totient is φ = 15620760.

The previous prime is 23431139. The next prime is 23431147. The reversal of 23431143 is 34113432.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23431139) and next prime (23431147).

It is not a de Polignac number, because 23431143 - 2² = 23431139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431147) 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, 3905188 + ... + 3905193.

It is an arithmetic number, because the mean of its divisors is an integer number (7810382).

Almost surely, 2^23431143 is an apocalyptic number.

23431143 is a deficient number, since it is larger than the sum of its proper divisors (7810385).

23431143 is an equidigital number, since it uses as much as digits as its factorization.

23431143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7810384.

The product of its digits is 864, while the sum is 21.

The square root of 23431143 is about 4840.5725900972. The cubic root of 23431143 is about 286.1526847043.

Adding to 23431143 its reverse (34113432), we get a palindrome (57544575).

It can be divided in two parts, 2343 and 1143, that added together give a triangular number (3486 = T₈₃).

The spelling of 23431143 in words is "twenty-three million, four hundred thirty-one thousand, one hundred forty-three".