11432131421 has 2 divisors, whose sum is σ = 11432131422. Its totient is φ = 11432131420.

The previous prime is 11432131411. The next prime is 11432131427. The reversal of 11432131421 is 12413123411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9215040025 + 2217091396 = 95995^2 + 47086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11432131421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11432131427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5716065710 + 5716065711.

It is an arithmetic number, because the mean of its divisors is an integer number (5716065711).

Almost surely, 2^11432131421 is an apocalyptic number.

It is an amenable number.

11432131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11432131421 is an equidigital number, since it uses as much as digits as its factorization.

11432131421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

Adding to 11432131421 its reverse (12413123411), we get a palindrome (23845254832).

The spelling of 11432131421 in words is "eleven billion, four hundred thirty-two million, one hundred thirty-one thousand, four hundred twenty-one".