312226429 has 2 divisors, whose sum is σ = 312226430. Its totient is φ = 312226428.

The previous prime is 312226391. The next prime is 312226433. The reversal of 312226429 is 924622213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269846329 + 42380100 = 16427^2 + 6510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312226429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312226429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312226459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156113214 + 156113215.

It is an arithmetic number, because the mean of its divisors is an integer number (156113215).

Almost surely, 2^312226429 is an apocalyptic number.

It is an amenable number.

312226429 is a deficient number, since it is larger than the sum of its proper divisors (1).

312226429 is an equidigital number, since it uses as much as digits as its factorization.

312226429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 312226429 is about 17669.9300790920. The cubic root of 312226429 is about 678.4063234179.

The spelling of 312226429 in words is "three hundred twelve million, two hundred twenty-six thousand, four hundred twenty-nine".