4231515440 has 20 divisors (see below), whose sum is σ = 9838273584. Its totient is φ = 1692606144.

The previous prime is 4231515437. The next prime is 4231515451. The reversal of 4231515440 is 445151324.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26446892 + ... + 26447051.

Almost surely, 2^4231515440 is an apocalyptic number.

4231515440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4231515440 is an abundant number, since it is smaller than the sum of its proper divisors (5606758144).

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

4231515440 is a wasteful number, since it uses less digits than its factorization.

4231515440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52893956 (or 52893950 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 4231515440 is about 65050.0994618763. The cubic root of 4231515440 is about 1617.4541427819.

Adding to 4231515440 its reverse (445151324), we get a palindrome (4676666764).

The spelling of 4231515440 in words is "four billion, two hundred thirty-one million, five hundred fifteen thousand, four hundred forty".