15432230431 has 4 divisors (see below), whose sum is σ = 15627575200. Its totient is φ = 15236885664.

The previous prime is 15432230419. The next prime is 15432230459. The reversal of 15432230431 is 13403223451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15432230431 - 2¹⁷ = 15432099359 is a prime.

It is a super-2 number, since 2×15432230431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15432230431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15432230531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97672266 + ... + 97672423.

It is an arithmetic number, because the mean of its divisors is an integer number (3906893800).

Almost surely, 2^15432230431 is an apocalyptic number.

15432230431 is a deficient number, since it is larger than the sum of its proper divisors (195344769).

15432230431 is an equidigital number, since it uses as much as digits as its factorization.

15432230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195344768.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 15432230431 its reverse (13403223451), we get a palindrome (28835453882).

The spelling of 15432230431 in words is "fifteen billion, four hundred thirty-two million, two hundred thirty thousand, four hundred thirty-one".