1228743315 has 24 divisors (see below), whose sum is σ = 2130671088. Its totient is φ = 655068480.

The previous prime is 1228743277. The next prime is 1228743317. The reversal of 1228743315 is 5133478221.

It is not a de Polignac number, because 1228743315 - 2²⁰ = 1227694739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228743315.

It is not an unprimeable number, because it can be changed into a prime (1228743317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172780 + ... + 179750.

It is an arithmetic number, because the mean of its divisors is an integer number (88777962).

Almost surely, 2^1228743315 is an apocalyptic number.

1228743315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1228743315 is a deficient number, since it is larger than the sum of its proper divisors (901927773).

1228743315 is a wasteful number, since it uses less digits than its factorization.

1228743315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10899 (or 10896 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1228743315 is about 35053.4351383712. The cubic root of 1228743315 is about 1071.0762499100.

The spelling of 1228743315 in words is "one billion, two hundred twenty-eight million, seven hundred forty-three thousand, three hundred fifteen".