23533333231 has 2 divisors, whose sum is σ = 23533333232. Its totient is φ = 23533333230.

The previous prime is 23533333183. The next prime is 23533333237. The reversal of 23533333231 is 13233333532.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23533333231 is a prime.

It is a super-2 number, since 2×23533333231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23533333193 and 23533333202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23533333237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11766666615 + 11766666616.

It is an arithmetic number, because the mean of its divisors is an integer number (11766666616).

Almost surely, 2^23533333231 is an apocalyptic number.

23533333231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23533333231 is an equidigital number, since it uses as much as digits as its factorization.

23533333231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 31.

Adding to 23533333231 its reverse (13233333532), we get a palindrome (36766666763).

The spelling of 23533333231 in words is "twenty-three billion, five hundred thirty-three million, three hundred thirty-three thousand, two hundred thirty-one".