15403312232 has 128 divisors (see below), whose sum is σ = 37258410240. Its totient is φ = 5795297280.

The previous prime is 15403312231. The next prime is 15403312237. The reversal of 15403312232 is 23221330451.

It is a happy number.

15403312232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15403312231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3120038 + ... + 3124970.

It is an arithmetic number, because the mean of its divisors is an integer number (291081330).

Almost surely, 2^15403312232 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 15403312232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18629205120).

15403312232 is an abundant number, since it is smaller than the sum of its proper divisors (21855098008).

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

15403312232 is a wasteful number, since it uses less digits than its factorization.

15403312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 15403312232 its reverse (23221330451), we get a palindrome (38624642683).

The spelling of 15403312232 in words is "fifteen billion, four hundred three million, three hundred twelve thousand, two hundred thirty-two".