11328431 has 2 divisors, whose sum is σ = 11328432. Its totient is φ = 11328430.

The previous prime is 11328419. The next prime is 11328433. The reversal of 11328431 is 13482311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11328431 - 2⁶ = 11328367 is a prime.

It is a super-2 number, since 2×11328431² = 256666697843522, which contains 22 as substring.

Together with 11328433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11328397 and 11328406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11328433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5664215 + 5664216.

It is an arithmetic number, because the mean of its divisors is an integer number (5664216).

Almost surely, 2^11328431 is an apocalyptic number.

11328431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11328431 is an equidigital number, since it uses as much as digits as its factorization.

11328431 is an evil number, because the sum of its binary digits is even.

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

The square root of 11328431 is about 3365.7734623709. The cubic root of 11328431 is about 224.5897445935.

The spelling of 11328431 in words is "eleven million, three hundred twenty-eight thousand, four hundred thirty-one".