1123423212 has 12 divisors (see below), whose sum is σ = 2621320856. Its totient is φ = 374474400.

The previous prime is 1123423211. The next prime is 1123423243. The reversal of 1123423212 is 2123243211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1123423211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46809289 + ... + 46809312.

Almost surely, 2^1123423212 is an apocalyptic number.

1123423212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123423212 is an abundant number, since it is smaller than the sum of its proper divisors (1497897644).

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

1123423212 is a wasteful number, since it uses less digits than its factorization.

1123423212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93618608 (or 93618606 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1123423212 is about 33517.5060528077. The cubic root of 1123423212 is about 1039.5557804533. Note that the first 3 decimals are identical.

Adding to 1123423212 its reverse (2123243211), we get a palindrome (3246666423).

The spelling of 1123423212 in words is "one billion, one hundred twenty-three million, four hundred twenty-three thousand, two hundred twelve".