1223102340 has 144 divisors (see below), whose sum is σ = 3849500928. Its totient is φ = 314088192.

The previous prime is 1223102327. The next prime is 1223102369. The reversal of 1223102340 is 432013221.

1223102340 is a `hidden beast` number, since 1 + 223 + 102 + 340 = 666.

It is a super-2 number, since 2×1223102340² = 2991958668226951200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 685089 + ... + 686871.

Almost surely, 2^1223102340 is an apocalyptic number.

1223102340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223102340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924750464).

1223102340 is an abundant number, since it is smaller than the sum of its proper divisors (2626398588).

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

1223102340 is a wasteful number, since it uses less digits than its factorization.

1223102340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938 (or 1933 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1223102340 is about 34972.8800644156. The cubic root of 1223102340 is about 1069.4346855118.

Adding to 1223102340 its reverse (432013221), we get a palindrome (1655115561).

The spelling of 1223102340 in words is "one billion, two hundred twenty-three million, one hundred two thousand, three hundred forty".