2231281968 has 20 divisors (see below), whose sum is σ = 5764145208. Its totient is φ = 743760640.

The previous prime is 2231281963. The next prime is 2231281991. The reversal of 2231281968 is 8691821322.

It is a super-3 number, since 3×2231281968³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231281961) 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, 23242473 + ... + 23242568.

Almost surely, 2^2231281968 is an apocalyptic number.

It is an amenable number.

2231281968 is an abundant number, since it is smaller than the sum of its proper divisors (3532863240).

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

2231281968 is a wasteful number, since it uses less digits than its factorization.

2231281968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46485052 (or 46485046 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 2231281968 is about 47236.4474532114. The cubic root of 2231281968 is about 1306.7268611494.

The spelling of 2231281968 in words is "two billion, two hundred thirty-one million, two hundred eighty-one thousand, nine hundred sixty-eight".