11431431233 has 2 divisors, whose sum is σ = 11431431234. Its totient is φ = 11431431232.

The previous prime is 11431431223. The next prime is 11431431241. The reversal of 11431431233 is 33213413411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8827166209 + 2604265024 = 93953^2 + 51032^2 .

It is a cyclic number.

It is not a de Polignac number, because 11431431233 - 2⁶ = 11431431169 is a prime.

It is not a weakly prime, because it can be changed into another prime (11431431223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715715616 + 5715715617.

It is an arithmetic number, because the mean of its divisors is an integer number (5715715617).

Almost surely, 2^11431431233 is an apocalyptic number.

It is an amenable number.

11431431233 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431431233 is an equidigital number, since it uses as much as digits as its factorization.

11431431233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

Adding to 11431431233 its reverse (33213413411), we get a palindrome (44644844644).

The spelling of 11431431233 in words is "eleven billion, four hundred thirty-one million, four hundred thirty-one thousand, two hundred thirty-three".