12290031 has 48 divisors (see below), whose sum is σ = 20913984. Its totient is φ = 6884352.

The previous prime is 12290009. The next prime is 12290071. The reversal of 12290031 is 13009221.

It is a happy number.

It is not a de Polignac number, because 12290031 - 2⁵ = 12289999 is a prime.

It is a super-2 number, since 2×12290031² = 302089723961922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12289986 and 12290013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12290071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73510 + ... + 73676.

It is an arithmetic number, because the mean of its divisors is an integer number (435708).

Almost surely, 2^12290031 is an apocalyptic number.

12290031 is a deficient number, since it is larger than the sum of its proper divisors (8623953).

12290031 is a wasteful number, since it uses less digits than its factorization.

12290031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 12290031 is about 3505.7140499476. The cubic root of 12290031 is about 230.7726441290.

Adding to 12290031 its reverse (13009221), we get a palindrome (25299252).

The spelling of 12290031 in words is "twelve million, two hundred ninety thousand, thirty-one".