1228215343 has 2 divisors, whose sum is σ = 1228215344. Its totient is φ = 1228215342.

The previous prime is 1228215283. The next prime is 1228215353. The reversal of 1228215343 is 3435128221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1228215343 - 2¹⁷ = 1228084271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228215353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614107671 + 614107672.

It is an arithmetic number, because the mean of its divisors is an integer number (614107672).

Almost surely, 2^1228215343 is an apocalyptic number.

1228215343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228215343 is an equidigital number, since it uses as much as digits as its factorization.

1228215343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

The square root of 1228215343 is about 35045.9033697235. The cubic root of 1228215343 is about 1070.9228196322.

It can be divided in two parts, 122821 and 5343, that added together give a square (128164 = 358²).

The spelling of 1228215343 in words is "one billion, two hundred twenty-eight million, two hundred fifteen thousand, three hundred forty-three".