2231401440 has 48 divisors (see below), whose sum is σ = 7028916048. Its totient is φ = 595040256.

The previous prime is 2231401423. The next prime is 2231401463. The reversal of 2231401440 is 441041322.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×2231401440³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323897 + ... + 2324856.

It is an arithmetic number, because the mean of its divisors is an integer number (146435751).

Almost surely, 2^2231401440 is an apocalyptic number.

2231401440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231401440 is an abundant number, since it is smaller than the sum of its proper divisors (4797514608).

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

2231401440 is a wasteful number, since it uses less digits than its factorization.

2231401440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648771 (or 4648763 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2231401440 is about 47237.7120529773. The cubic root of 2231401440 is about 1306.7501832407.

Adding to 2231401440 its reverse (441041322), we get a palindrome (2672442762).

The spelling of 2231401440 in words is "two billion, two hundred thirty-one million, four hundred one thousand, four hundred forty".