12361831 has 2 divisors, whose sum is σ = 12361832. Its totient is φ = 12361830.

The previous prime is 12361829. The next prime is 12361847. The reversal of 12361831 is 13816321.

12361831 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12361831 - 2¹ = 12361829 is a prime.

It is a super-2 number, since 2×12361831² = 305629731345122, which contains 22 as substring.

Together with 12361829, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12361796 and 12361805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12361871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6180915 + 6180916.

It is an arithmetic number, because the mean of its divisors is an integer number (6180916).

Almost surely, 2^12361831 is an apocalyptic number.

12361831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12361831 is an equidigital number, since it uses as much as digits as its factorization.

12361831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 12361831 is about 3515.9395614828. The cubic root of 12361831 is about 231.2211733242.

The spelling of 12361831 in words is "twelve million, three hundred sixty-one thousand, eight hundred thirty-one".