1304223155 has 4 divisors (see below), whose sum is σ = 1565067792. Its totient is φ = 1043378520.

The previous prime is 1304223133. The next prime is 1304223181. The reversal of 1304223155 is 5513224031.

It is a happy number.

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

It is not a de Polignac number, because 1304223155 - 2²⁸ = 1035787699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130422311 + ... + 130422320.

It is an arithmetic number, because the mean of its divisors is an integer number (391266948).

Almost surely, 2^1304223155 is an apocalyptic number.

1304223155 is a deficient number, since it is larger than the sum of its proper divisors (260844637).

1304223155 is an equidigital number, since it uses as much as digits as its factorization.

1304223155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260844636.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1304223155 is about 36114.0298914425. The cubic root of 1304223155 is about 1092.5734315906.

Adding to 1304223155 its reverse (5513224031), we get a palindrome (6817447186).

The spelling of 1304223155 in words is "one billion, three hundred four million, two hundred twenty-three thousand, one hundred fifty-five".