1331556223 has 8 divisors (see below), whose sum is σ = 1356725376. Its totient is φ = 1306565400.

The previous prime is 1331556209. The next prime is 1331556241. The reversal of 1331556223 is 3226551331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331556223 - 2⁹ = 1331555711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331556253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29461 + ... + 59422.

It is an arithmetic number, because the mean of its divisors is an integer number (169590672).

Almost surely, 2^1331556223 is an apocalyptic number.

1331556223 is a deficient number, since it is larger than the sum of its proper divisors (25169153).

1331556223 is an equidigital number, since it uses as much as digits as its factorization.

1331556223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89165.

The product of its digits is 16200, while the sum is 31.

The square root of 1331556223 is about 36490.4949678680. The cubic root of 1331556223 is about 1100.1532081367.

The spelling of 1331556223 in words is "one billion, three hundred thirty-one million, five hundred fifty-six thousand, two hundred twenty-three".