1355421223 has 8 divisors (see below), whose sum is σ = 1464670368. Its totient is φ = 1246884384.

The previous prime is 1355421217. The next prime is 1355421229. The reversal of 1355421223 is 3221245531.

It is an interprime number because it is at equal distance from previous prime (1355421217) and next prime (1355421229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355421223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1355421191 and 1355421200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355421229) 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 7 ways as a sum of consecutive naturals, for example, 174115 + ... + 181732.

It is an arithmetic number, because the mean of its divisors is an integer number (183083796).

Almost surely, 2^1355421223 is an apocalyptic number.

1355421223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1355421223 is a deficient number, since it is larger than the sum of its proper divisors (109249145).

1355421223 is a wasteful number, since it uses less digits than its factorization.

1355421223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356153.

The product of its digits is 7200, while the sum is 28.

The square root of 1355421223 is about 36816.0457273727. The cubic root of 1355421223 is about 1106.6868778768.

Adding to 1355421223 its reverse (3221245531), we get a palindrome (4576666754).

The spelling of 1355421223 in words is "one billion, three hundred fifty-five million, four hundred twenty-one thousand, two hundred twenty-three".