1312230149 has 2 divisors, whose sum is σ = 1312230150. Its totient is φ = 1312230148.

The previous prime is 1312230107. The next prime is 1312230163. The reversal of 1312230149 is 9410322131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1286656900 + 25573249 = 35870^2 + 5057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312230149 - 2²⁸ = 1043794693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312230349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656115074 + 656115075.

It is an arithmetic number, because the mean of its divisors is an integer number (656115075).

Almost surely, 2^1312230149 is an apocalyptic number.

It is an amenable number.

1312230149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312230149 is an equidigital number, since it uses as much as digits as its factorization.

1312230149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1312230149 is about 36224.7173763992. The cubic root of 1312230149 is about 1094.8047437896.

The spelling of 1312230149 in words is "one billion, three hundred twelve million, two hundred thirty thousand, one hundred forty-nine".