23311022432143 has 8 divisors (see below), whose sum is σ = 25109207894016. Its totient is φ = 21578225532600.

The previous prime is 23311022432069. The next prime is 23311022432161. The reversal of 23311022432143 is 34123422011332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23311022432143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311022433143) 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, 16347139843 + ... + 16347141268.

It is an arithmetic number, because the mean of its divisors is an integer number (3138650986752).

Almost surely, 2^{23311022432143} is an apocalyptic number.

23311022432143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23311022432143 is a deficient number, since it is larger than the sum of its proper divisors (1798185461873).

23311022432143 is a wasteful number, since it uses less digits than its factorization.

23311022432143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32694281165.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 23311022432143 its reverse (34123422011332), we get a palindrome (57434444443475).

The spelling of 23311022432143 in words is "twenty-three trillion, three hundred eleven billion, twenty-two million, four hundred thirty-two thousand, one hundred forty-three".