1304123431 has 16 divisors (see below), whose sum is σ = 1488872448. Its totient is φ = 1131609600.

The previous prime is 1304123377. The next prime is 1304123441. The reversal of 1304123431 is 1343214031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304123431 is a prime.

It is a super-2 number, since 2×1304123431² = 3401475846566423522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304123441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204826 + ... + 211096.

It is an arithmetic number, because the mean of its divisors is an integer number (93054528).

Almost surely, 2^1304123431 is an apocalyptic number.

1304123431 is a deficient number, since it is larger than the sum of its proper divisors (184749017).

1304123431 is a wasteful number, since it uses less digits than its factorization.

1304123431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7242.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1304123431 is about 36112.6491828002. The cubic root of 1304123431 is about 1092.5455839610.

Adding to 1304123431 its reverse (1343214031), we get a palindrome (2647337462).

The spelling of 1304123431 in words is "one billion, three hundred four million, one hundred twenty-three thousand, four hundred thirty-one".