12129031 has 2 divisors, whose sum is σ = 12129032. Its totient is φ = 12129030.

The previous prime is 12129017. The next prime is 12129059. The reversal of 12129031 is 13092121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12129031 - 2⁷ = 12128903 is a prime.

It is a super-2 number, since 2×12129031² = 294226785997922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12129731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064515 + 6064516.

It is an arithmetic number, because the mean of its divisors is an integer number (6064516).

Almost surely, 2^12129031 is an apocalyptic number.

12129031 is the 1558-th centered decagonal number.

12129031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12129031 is an equidigital number, since it uses as much as digits as its factorization.

12129031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12129031 is about 3482.6758390640. The cubic root of 12129031 is about 229.7605005378.

The spelling of 12129031 in words is "twelve million, one hundred twenty-nine thousand, thirty-one".