11428331 has 2 divisors, whose sum is σ = 11428332. Its totient is φ = 11428330.

The previous prime is 11428297. The next prime is 11428343. The reversal of 11428331 is 13382411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11428331 - 2¹⁸ = 11166187 is a prime.

It is a super-2 number, since 2×11428331² = 261213498891122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11428297 and 11428306.

It is not a weakly prime, because it can be changed into another prime (11428531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5714165 + 5714166.

It is an arithmetic number, because the mean of its divisors is an integer number (5714166).

Almost surely, 2^11428331 is an apocalyptic number.

11428331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11428331 is an equidigital number, since it uses as much as digits as its factorization.

11428331 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 11428331 is about 3380.5814588618. The cubic root of 11428331 is about 225.2479965150.

The spelling of 11428331 in words is "eleven million, four hundred twenty-eight thousand, three hundred thirty-one".