2231543412 has 48 divisors (see below), whose sum is σ = 6611982720. Its totient is φ = 637583616.

The previous prime is 2231543411. The next prime is 2231543441. The reversal of 2231543412 is 2143451322.

2231543412 is a `hidden beast` number, since 2 + 2 + 315 + 4 + 341 + 2 = 666.

It is a super-3 number, since 3×2231543412³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231543411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475133 + ... + 1476644.

It is an arithmetic number, because the mean of its divisors is an integer number (137749640).

Almost surely, 2^2231543412 is an apocalyptic number.

It is an amenable number.

2231543412 is an abundant number, since it is smaller than the sum of its proper divisors (4380439308).

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

2231543412 is a wasteful number, since it uses less digits than its factorization.

2231543412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951797 (or 2951789 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 2231543412 is about 47239.2147690878. The cubic root of 2231543412 is about 1306.7778964675. Note that the first 3 decimals are identical.

Adding to 2231543412 its reverse (2143451322), we get a palindrome (4374994734).

The spelling of 2231543412 in words is "two billion, two hundred thirty-one million, five hundred forty-three thousand, four hundred twelve".