1223511630 has 32 divisors (see below), whose sum is σ = 3203376768. Its totient is φ = 296608800.

The previous prime is 1223511623. The next prime is 1223511647. The reversal of 1223511630 is 361153221.

1223511630 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1223511630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1853476 + ... + 1854135.

It is an arithmetic number, because the mean of its divisors is an integer number (100105524).

Almost surely, 2^1223511630 is an apocalyptic number.

1223511630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223511630 is an abundant number, since it is smaller than the sum of its proper divisors (1979865138).

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

1223511630 is a wasteful number, since it uses less digits than its factorization.

1223511630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707632.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1223511630 is about 34978.7311090611. The cubic root of 1223511630 is about 1069.5539614691.

Adding to 1223511630 its reverse (361153221), we get a palindrome (1584664851).

The spelling of 1223511630 in words is "one billion, two hundred twenty-three million, five hundred eleven thousand, six hundred thirty".