1123432340 has 24 divisors (see below), whose sum is σ = 2374241352. Its totient is φ = 446509440.

The previous prime is 1123432337. The next prime is 1123432367. The reversal of 1123432340 is 432343211.

It can be written as a sum of positive squares in 4 ways, for example, as 5466244 + 1117966096 = 2338^2 + 33436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175751 + ... + 182030.

It is an arithmetic number, because the mean of its divisors is an integer number (98926723).

Almost surely, 2^1123432340 is an apocalyptic number.

1123432340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123432340 is an abundant number, since it is smaller than the sum of its proper divisors (1250809012).

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

1123432340 is a wasteful number, since it uses less digits than its factorization.

1123432340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357947 (or 357945 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1123432340 is about 33517.6422201801. The cubic root of 1123432340 is about 1039.5585959668.

Adding to 1123432340 its reverse (432343211), we get a palindrome (1555775551).

The spelling of 1123432340 in words is "one billion, one hundred twenty-three million, four hundred thirty-two thousand, three hundred forty".