12263131 has 4 divisors (see below), whose sum is σ = 12279064. Its totient is φ = 12247200.

The previous prime is 12263129. The next prime is 12263149. The reversal of 12263131 is 13136221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12263131 - 2¹ = 12263129 is a prime.

It is a super-2 number, since 2×12263131² = 300768763846322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12263099 and 12263108.

It is not an unprimeable number, because it can be changed into a prime (12263101) 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, 6750 + ... + 8371.

It is an arithmetic number, because the mean of its divisors is an integer number (3069766).

It is a Poulet number, since it divides 2^12263130-1.

Almost surely, 2^12263131 is an apocalyptic number.

12263131 is a deficient number, since it is larger than the sum of its proper divisors (15933).

12263131 is an equidigital number, since it uses as much as digits as its factorization.

12263131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15932.

The product of its digits is 216, while the sum is 19.

The square root of 12263131 is about 3501.8753547207. The cubic root of 12263131 is about 230.6041520460.

Adding to 12263131 its reverse (13136221), we get a palindrome (25399352).

The spelling of 12263131 in words is "twelve million, two hundred sixty-three thousand, one hundred thirty-one".