53231004040 has 128 divisors (see below), whose sum is σ = 126056217600. Its totient is φ = 20191691520.

The previous prime is 53231004019. The next prime is 53231004049. The reversal of 53231004040 is 4040013235.

It is a super-2 number, since 2×53231004040² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53231004049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85994851 + ... + 85995469.

It is an arithmetic number, because the mean of its divisors is an integer number (984814200).

Almost surely, 2^53231004040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53231004040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63028108800).

53231004040 is an abundant number, since it is smaller than the sum of its proper divisors (72825213560).

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

53231004040 is a wasteful number, since it uses less digits than its factorization.

53231004040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 53231004040 its reverse (4040013235), we get a palindrome (57271017275).

The spelling of 53231004040 in words is "fifty-three billion, two hundred thirty-one million, four thousand, forty".