2231532440 has 16 divisors (see below), whose sum is σ = 5020948080. Its totient is φ = 892612960.

The previous prime is 2231532437. The next prime is 2231532451. The reversal of 2231532440 is 442351322.

It is a super-3 number, since 3×2231532440³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27894116 + ... + 27894195.

It is an arithmetic number, because the mean of its divisors is an integer number (313809255).

Almost surely, 2^2231532440 is an apocalyptic number.

2231532440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231532440 is an abundant number, since it is smaller than the sum of its proper divisors (2789415640).

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

2231532440 is a wasteful number, since it uses less digits than its factorization.

2231532440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55788322 (or 55788318 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2231532440 is about 47239.0986366167. The cubic root of 2231532440 is about 1306.7757547524.

Adding to 2231532440 its reverse (442351322), we get a palindrome (2673883762).

The spelling of 2231532440 in words is "two billion, two hundred thirty-one million, five hundred thirty-two thousand, four hundred forty".