1312126229 has 2 divisors, whose sum is σ = 1312126230. Its totient is φ = 1312126228.

The previous prime is 1312126217. The next prime is 1312126259. The reversal of 1312126229 is 9226212131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687226225 + 624900004 = 26215^2 + 24998^2 .

It is an emirp because it is prime and its reverse (9226212131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312126229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312126259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656063114 + 656063115.

It is an arithmetic number, because the mean of its divisors is an integer number (656063115).

Almost surely, 2^1312126229 is an apocalyptic number.

It is an amenable number.

1312126229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312126229 is an equidigital number, since it uses as much as digits as its factorization.

1312126229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 1312126229 is about 36223.2829682788. The cubic root of 1312126229 is about 1094.7758425808.

The spelling of 1312126229 in words is "one billion, three hundred twelve million, one hundred twenty-six thousand, two hundred twenty-nine".