23404402143 has 8 divisors (see below), whose sum is σ = 34673188400. Its totient is φ = 15602934744.

The previous prime is 23404402127. The next prime is 23404402159. The reversal of 23404402143 is 34120440432.

It is a happy number.

23404402143 is a `hidden beast` number, since 2 + 3 + 4 + 0 + 440 + 214 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (23404402127) and next prime (23404402159).

It is not a de Polignac number, because 23404402143 - 2⁴ = 23404402127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 866829709 = 23404402143 / (2 + 3 + 4 + 0 + 4 + 4 + 0 + 2 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23404402183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433414828 + ... + 433414881.

It is an arithmetic number, because the mean of its divisors is an integer number (4334148550).

Almost surely, 2^23404402143 is an apocalyptic number.

23404402143 is a deficient number, since it is larger than the sum of its proper divisors (11268786257).

23404402143 is an equidigital number, since it uses as much as digits as its factorization.

23404402143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866829718 (or 866829712 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 23404402143 its reverse (34120440432), we get a palindrome (57524842575).

The spelling of 23404402143 in words is "twenty-three billion, four hundred four million, four hundred two thousand, one hundred forty-three".