1229131 has 2 divisors, whose sum is σ = 1229132. Its totient is φ = 1229130.

The previous prime is 1229113. The next prime is 1229141. The reversal of 1229131 is 1319221.

Together with previous prime (1229113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229131 is a prime.

It is a super-2 number, since 2×1229131² = 3021526030322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1229099 and 1229108.

It is not a weakly prime, because it can be changed into another prime (1229141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614565 + 614566.

It is an arithmetic number, because the mean of its divisors is an integer number (614566).

2^1229131 is an apocalyptic number.

1229131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229131 is an equidigital number, since it uses as much as digits as its factorization.

1229131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1229131 is about 1108.6618059625. The cubic root of 1229131 is about 107.1188884374.

The spelling of 1229131 in words is "one million, two hundred twenty-nine thousand, one hundred thirty-one".