312236149 has 2 divisors, whose sum is σ = 312236150. Its totient is φ = 312236148.

The previous prime is 312236131. The next prime is 312236153. The reversal of 312236149 is 941632213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309513649 + 2722500 = 17593^2 + 1650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312236149 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312236149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312236129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156118074 + 156118075.

It is an arithmetic number, because the mean of its divisors is an integer number (156118075).

Almost surely, 2^312236149 is an apocalyptic number.

It is an amenable number.

312236149 is a deficient number, since it is larger than the sum of its proper divisors (1).

312236149 is an equidigital number, since it uses as much as digits as its factorization.

312236149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 312236149 is about 17670.2051204846. The cubic root of 312236149 is about 678.4133632245.

The spelling of 312236149 in words is "three hundred twelve million, two hundred thirty-six thousand, one hundred forty-nine".