1304123031 has 16 divisors (see below), whose sum is σ = 1933981920. Its totient is φ = 868538880.

The previous prime is 1304123021. The next prime is 1304123063. The reversal of 1304123031 is 1303214031.

It is not a de Polignac number, because 1304123031 - 2¹⁰ = 1304122007 is a prime.

It is a super-2 number, since 2×1304123031² = 3401473759969253922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1304122995 and 1304123013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304123021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3511 + ... + 51191.

It is an arithmetic number, because the mean of its divisors is an integer number (120873870).

Almost surely, 2^1304123031 is an apocalyptic number.

1304123031 is a deficient number, since it is larger than the sum of its proper divisors (629858889).

1304123031 is a wasteful number, since it uses less digits than its factorization.

1304123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48703 (or 48697 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1304123031 is about 36112.6436445741. The cubic root of 1304123031 is about 1092.5454722593.

Adding to 1304123031 its reverse (1303214031), we get a palindrome (2607337062).

The spelling of 1304123031 in words is "one billion, three hundred four million, one hundred twenty-three thousand, thirty-one".