1228231270 has 64 divisors (see below), whose sum is σ = 2576862720. Its totient is φ = 412803072.

The previous prime is 1228231247. The next prime is 1228231273. The reversal of 1228231270 is 721328221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228231273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204821 + ... + 1205839.

It is an arithmetic number, because the mean of its divisors is an integer number (40263480).

Almost surely, 2^1228231270 is an apocalyptic number.

1228231270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228231270 is an abundant number, since it is smaller than the sum of its proper divisors (1348631450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228231270 is a wasteful number, since it uses less digits than its factorization.

1228231270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1228231270 is about 35046.1305995398. The cubic root of 1228231270 is about 1070.9274487102.

Adding to 1228231270 its reverse (721328221), we get a palindrome (1949559491).

The spelling of 1228231270 in words is "one billion, two hundred twenty-eight million, two hundred thirty-one thousand, two hundred seventy".