2231211128 has 16 divisors (see below), whose sum is σ = 4240830480. Its totient is φ = 1100323008.

The previous prime is 2231211127. The next prime is 2231211233. The reversal of 2231211128 is 8211121322.

2231211128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2231211128³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231211127) 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, 1909700 + ... + 1910867.

It is an arithmetic number, because the mean of its divisors is an integer number (265051905).

Almost surely, 2^2231211128 is an apocalyptic number.

It is an amenable number.

2231211128 is a deficient number, since it is larger than the sum of its proper divisors (2009619352).

2231211128 is a wasteful number, since it uses less digits than its factorization.

2231211128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820646 (or 3820642 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 2231211128 is about 47235.6976025548. The cubic root of 2231211128 is about 1306.7130321023.

The spelling of 2231211128 in words is "two billion, two hundred thirty-one million, two hundred eleven thousand, one hundred twenty-eight".