23131443400433 has 4 divisors (see below), whose sum is σ = 23131457135220. Its totient is φ = 23131429665648.

The previous prime is 23131443400423. The next prime is 23131443400447. The reversal of 23131443400433 is 33400434413132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8291906107489 + 14839537292944 = 2879567^2 + 3852212^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131443400433 - 2²² = 23131439206129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23131443400393 and 23131443400402.

It is not an unprimeable number, because it can be changed into a prime (23131443400423) 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, 3919310 + ... + 7850087.

It is an arithmetic number, because the mean of its divisors is an integer number (5782864283805).

Almost surely, 2^{23131443400433} is an apocalyptic number.

It is an amenable number.

23131443400433 is a deficient number, since it is larger than the sum of its proper divisors (13734787).

23131443400433 is a wasteful number, since it uses less digits than its factorization.

23131443400433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13734786.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 23131443400433 its reverse (33400434413132), we get a palindrome (56531877813565).

The spelling of 23131443400433 in words is "twenty-three trillion, one hundred thirty-one billion, four hundred forty-three million, four hundred thousand, four hundred thirty-three".