2112312280 has 32 divisors (see below), whose sum is σ = 5118296400. Its totient is φ = 779930496.

The previous prime is 2112312269. The next prime is 2112312281. The reversal of 2112312280 is 822132112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112312281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030550 + ... + 2031589.

Almost surely, 2^2112312280 is an apocalyptic number.

2112312280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112312280 is an abundant number, since it is smaller than the sum of its proper divisors (3005984120).

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

2112312280 is a wasteful number, since it uses less digits than its factorization.

2112312280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062163 (or 4062159 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2112312280 is about 45959.8986073729. The cubic root of 2112312280 is about 1283.0769642873.

Adding to 2112312280 its reverse (822132112), we get a palindrome (2934444392).

The spelling of 2112312280 in words is "two billion, one hundred twelve million, three hundred twelve thousand, two hundred eighty".