1356172223 has 32 divisors (see below), whose sum is σ = 1605120000. Its totient is φ = 1122076800.

The previous prime is 1356172217. The next prime is 1356172243. The reversal of 1356172223 is 3222716531.

It is a cyclic number.

It is not a de Polignac number, because 1356172223 - 2⁸ = 1356171967 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 1356172223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356172243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8981198 + ... + 8981348.

It is an arithmetic number, because the mean of its divisors is an integer number (50160000).

Almost surely, 2^1356172223 is an apocalyptic number.

1356172223 is a deficient number, since it is larger than the sum of its proper divisors (248947777).

1356172223 is a wasteful number, since it uses less digits than its factorization.

1356172223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495.

The product of its digits is 15120, while the sum is 32.

The square root of 1356172223 is about 36826.2436721423. The cubic root of 1356172223 is about 1106.8912346180.

Adding to 1356172223 its reverse (3222716531), we get a palindrome (4578888754).

The spelling of 1356172223 in words is "one billion, three hundred fifty-six million, one hundred seventy-two thousand, two hundred twenty-three".