1312145299 has 2 divisors, whose sum is σ = 1312145300. Its totient is φ = 1312145298.

The previous prime is 1312145293. The next prime is 1312145321. The reversal of 1312145299 is 9925412131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312145299 - 2³ = 1312145291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312145291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656072649 + 656072650.

It is an arithmetic number, because the mean of its divisors is an integer number (656072650).

Almost surely, 2^1312145299 is an apocalyptic number.

1312145299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312145299 is an equidigital number, since it uses as much as digits as its factorization.

1312145299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 1312145299 is about 36223.5461958103. The cubic root of 1312145299 is about 1094.7811462560.

It can be divided in two parts, 1312 and 145299, that added together give a triangular number (146611 = T₅₄₁).

The spelling of 1312145299 in words is "one billion, three hundred twelve million, one hundred forty-five thousand, two hundred ninety-nine".