11822431 has 4 divisors (see below), whose sum is σ = 11893392. Its totient is φ = 11751472.

The previous prime is 11822359. The next prime is 11822441. The reversal of 11822431 is 13422811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13422811 = 79 ⋅169909.

It is a cyclic number.

It is not a de Polignac number, because 11822431 - 2¹³ = 11814239 is a prime.

It is a super-2 number, since 2×11822431² = 279539749499522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11822441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35230 + ... + 35563.

It is an arithmetic number, because the mean of its divisors is an integer number (2973348).

Almost surely, 2^11822431 is an apocalyptic number.

11822431 is a deficient number, since it is larger than the sum of its proper divisors (70961).

11822431 is an equidigital number, since it uses as much as digits as its factorization.

11822431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70960.

The product of its digits is 384, while the sum is 22.

The square root of 11822431 is about 3438.3762155995. The cubic root of 11822431 is about 227.8079780082.

The spelling of 11822431 in words is "eleven million, eight hundred twenty-two thousand, four hundred thirty-one".