15231401332 has 48 divisors (see below), whose sum is σ = 30962066688. Its totient is φ = 6421570560.

The previous prime is 15231401329. The next prime is 15231401333. The reversal of 15231401332 is 23310413251.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15231401297 and 15231401306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15231401333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436782 + ... + 470362.

It is an arithmetic number, because the mean of its divisors is an integer number (645043056).

Almost surely, 2^15231401332 is an apocalyptic number.

It is an amenable number.

15231401332 is an abundant number, since it is smaller than the sum of its proper divisors (15730665356).

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

15231401332 is a wasteful number, since it uses less digits than its factorization.

15231401332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33856 (or 33854 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 15231401332 its reverse (23310413251), we get a palindrome (38541814583).

The spelling of 15231401332 in words is "fifteen billion, two hundred thirty-one million, four hundred one thousand, three hundred thirty-two".