11531211383 has 2 divisors, whose sum is σ = 11531211384. Its totient is φ = 11531211382.

The previous prime is 11531211353. The next prime is 11531211409. The reversal of 11531211383 is 38311213511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11531211383 - 2⁸ = 11531211127 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11531211353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765605691 + 5765605692.

It is an arithmetic number, because the mean of its divisors is an integer number (5765605692).

Almost surely, 2^11531211383 is an apocalyptic number.

11531211383 is a deficient number, since it is larger than the sum of its proper divisors (1).

11531211383 is an equidigital number, since it uses as much as digits as its factorization.

11531211383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

Adding to 11531211383 its reverse (38311213511), we get a palindrome (49842424894).

The spelling of 11531211383 in words is "eleven billion, five hundred thirty-one million, two hundred eleven thousand, three hundred eighty-three".