1304031213 has 24 divisors (see below), whose sum is σ = 1946820096. Its totient is φ = 840247200.

The previous prime is 1304031181. The next prime is 1304031217. The reversal of 1304031213 is 3121304031.

It is not a de Polignac number, because 1304031213 - 2⁵ = 1304031181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304031217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260056 + ... + 265022.

It is an arithmetic number, because the mean of its divisors is an integer number (81117504).

Almost surely, 2^1304031213 is an apocalyptic number.

It is an amenable number.

1304031213 is a deficient number, since it is larger than the sum of its proper divisors (642788883).

1304031213 is a wasteful number, since it uses less digits than its factorization.

1304031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5945 (or 5942 counting only the distinct ones).

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

The square root of 1304031213 is about 36111.3723499952. The cubic root of 1304031213 is about 1092.5198310961.

Adding to 1304031213 its reverse (3121304031), we get a palindrome (4425335244).

It can be divided in two parts, 13040 and 31213, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 1304031213 in words is "one billion, three hundred four million, thirty-one thousand, two hundred thirteen".