1228351 has 2 divisors, whose sum is σ = 1228352. Its totient is φ = 1228350.

The previous prime is 1228333. The next prime is 1228373. The reversal of 1228351 is 1538221.

It is an a-pointer prime, because the next prime (1228373) can be obtained adding 1228351 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614175 + 614176.

It is an arithmetic number, because the mean of its divisors is an integer number (614176).

2^1228351 is an apocalyptic number.

1228351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228351 is an equidigital number, since it uses as much as digits as its factorization.

1228351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 1228351 is about 1108.3099746912. The cubic root of 1228351 is about 107.0962246168.

The spelling of 1228351 in words is "one million, two hundred twenty-eight thousand, three hundred fifty-one".