5231511240 has 64 divisors (see below), whose sum is σ = 15703450560. Its totient is φ = 1394277120.

The previous prime is 5231511223. The next prime is 5231511283. The reversal of 5231511240 is 421151325.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 5231511240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217410 + ... + 240270.

It is an arithmetic number, because the mean of its divisors is an integer number (245366415).

Almost surely, 2^5231511240 is an apocalyptic number.

It is an amenable number.

5231511240 is an abundant number, since it is smaller than the sum of its proper divisors (10471939320).

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

5231511240 is a wasteful number, since it uses less digits than its factorization.

5231511240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24782 (or 24778 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 5231511240 is about 72329.1866399727. The cubic root of 5231511240 is about 1735.9706871037.

Adding to 5231511240 its reverse (421151325), we get a palindrome (5652662565).

The spelling of 5231511240 in words is "five billion, two hundred thirty-one million, five hundred eleven thousand, two hundred forty".