1304431022 has 4 divisors (see below), whose sum is σ = 1956646536. Its totient is φ = 652215510.

The previous prime is 1304431021. The next prime is 1304431033. The reversal of 1304431022 is 2201344031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2201344031 = 39983 ⋅55057.

It is a junction number, because it is equal to n+sod(n) for n = 1304430985 and 1304431003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304431021) 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 as a sum of consecutive naturals, namely, 326107754 + ... + 326107757.

It is an arithmetic number, because the mean of its divisors is an integer number (489161634).

Almost surely, 2^1304431022 is an apocalyptic number.

1304431022 is a deficient number, since it is larger than the sum of its proper divisors (652215514).

1304431022 is an equidigital number, since it uses as much as digits as its factorization.

1304431022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652215513.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1304431022 is about 36116.9077026259. The cubic root of 1304431022 is about 1092.6314732675.

Adding to 1304431022 its reverse (2201344031), we get a palindrome (3505775053).

The spelling of 1304431022 in words is "one billion, three hundred four million, four hundred thirty-one thousand, twenty-two".