11423431 has 2 divisors, whose sum is σ = 11423432. Its totient is φ = 11423430.

The previous prime is 11423429. The next prime is 11423441. The reversal of 11423431 is 13432411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11423431 - 2¹ = 11423429 is a prime.

It is a super-2 number, since 2×11423431² = 260989551623522, which contains 22 as substring.

Together with 11423429, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11423399 and 11423408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11423411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5711715 + 5711716.

It is an arithmetic number, because the mean of its divisors is an integer number (5711716).

Almost surely, 2^11423431 is an apocalyptic number.

11423431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11423431 is an equidigital number, since it uses as much as digits as its factorization.

11423431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 11423431 is about 3379.8566537651. The cubic root of 11423431 is about 225.2157995429.

Adding to 11423431 its reverse (13432411), we get a palindrome (24855842).

The spelling of 11423431 in words is "eleven million, four hundred twenty-three thousand, four hundred thirty-one".