1213404323 has 4 divisors (see below), whose sum is σ = 1213594800. Its totient is φ = 1213213848.

The previous prime is 1213404301. The next prime is 1213404329. The reversal of 1213404323 is 3234043121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3234043121 = 16741 ⋅193181.

It is a cyclic number.

It is not a de Polignac number, because 1213404323 - 2⁸ = 1213404067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213404329) 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, 85340 + ... + 98537.

It is an arithmetic number, because the mean of its divisors is an integer number (303398700).

Almost surely, 2^1213404323 is an apocalyptic number.

1213404323 is a deficient number, since it is larger than the sum of its proper divisors (190477).

1213404323 is an equidigital number, since it uses as much as digits as its factorization.

1213404323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190476.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1213404323 is about 34833.9535941587. The cubic root of 1213404323 is about 1066.6006547799.

Adding to 1213404323 its reverse (3234043121), we get a palindrome (4447447444).

The spelling of 1213404323 in words is "one billion, two hundred thirteen million, four hundred four thousand, three hundred twenty-three".