15701223 has 4 divisors (see below), whose sum is σ = 20934968. Its totient is φ = 10467480.

The previous prime is 15701219. The next prime is 15701227. The reversal of 15701223 is 32210751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32210751 = 3 ⋅10736917.

It is an interprime number because it is at equal distance from previous prime (15701219) and next prime (15701227).

It is not a de Polignac number, because 15701223 - 2² = 15701219 is a prime.

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 15701223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15701227) 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, 2616868 + ... + 2616873.

It is an arithmetic number, because the mean of its divisors is an integer number (5233742).

Almost surely, 2^15701223 is an apocalyptic number.

15701223 is a deficient number, since it is larger than the sum of its proper divisors (5233745).

15701223 is an equidigital number, since it uses as much as digits as its factorization.

15701223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233744.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 15701223 is about 3962.4768769041. The cubic root of 15701223 is about 250.4058634097.

Adding to 15701223 its reverse (32210751), we get a palindrome (47911974).

The spelling of 15701223 in words is "fifteen million, seven hundred one thousand, two hundred twenty-three".