11431321049 has 2 divisors, whose sum is σ = 11431321050. Its totient is φ = 11431321048.

The previous prime is 11431320983. The next prime is 11431321061. The reversal of 11431321049 is 94012313411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9556431049 + 1874890000 = 97757^2 + 43300^2 .

It is a cyclic number.

It is not a de Polignac number, because 11431321049 - 2⁸ = 11431320793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11431921049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5715660524 + 5715660525.

It is an arithmetic number, because the mean of its divisors is an integer number (5715660525).

Almost surely, 2^11431321049 is an apocalyptic number.

It is an amenable number.

11431321049 is a deficient number, since it is larger than the sum of its proper divisors (1).

11431321049 is an equidigital number, since it uses as much as digits as its factorization.

11431321049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 11431321049 in words is "eleven billion, four hundred thirty-one million, three hundred twenty-one thousand, forty-nine".