12235831 has 2 divisors, whose sum is σ = 12235832. Its totient is φ = 12235830.

The previous prime is 12235819. The next prime is 12235841. The reversal of 12235831 is 13853221.

It is a strong prime.

It is an emirp because it is prime and its reverse (13853221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12235831 - 2⁷ = 12235703 is a prime.

It is a super-2 number, since 2×12235831² = 299431120521122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12235796 and 12235805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12235841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6117915 + 6117916.

It is an arithmetic number, because the mean of its divisors is an integer number (6117916).

Almost surely, 2^12235831 is an apocalyptic number.

12235831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12235831 is an equidigital number, since it uses as much as digits as its factorization.

12235831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 12235831 is about 3497.9752714964. The cubic root of 12235831 is about 230.4329023931.

It can be divided in two parts, 122 and 35831, that added together give a palindrome (35953).

The spelling of 12235831 in words is "twelve million, two hundred thirty-five thousand, eight hundred thirty-one".