15342231 has 4 divisors (see below), whose sum is σ = 20456312. Its totient is φ = 10228152.

The previous prime is 15342209. The next prime is 15342233. The reversal of 15342231 is 13224351.

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

It is not a de Polignac number, because 15342231 - 2⁶ = 15342167 is a prime.

It is a super-2 number, since 2×15342231² = 470768104114722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15342198 and 15342207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15342233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557036 + ... + 2557041.

It is an arithmetic number, because the mean of its divisors is an integer number (5114078).

Almost surely, 2^15342231 is an apocalyptic number.

15342231 is a deficient number, since it is larger than the sum of its proper divisors (5114081).

15342231 is an equidigital number, since it uses as much as digits as its factorization.

15342231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114080.

The product of its digits is 720, while the sum is 21.

The square root of 15342231 is about 3916.9160062478. The cubic root of 15342231 is about 248.4827086036.

Adding to 15342231 its reverse (13224351), we get a palindrome (28566582).

The spelling of 15342231 in words is "fifteen million, three hundred forty-two thousand, two hundred thirty-one".