1304431514021 has 8 divisors (see below), whose sum is σ = 1348072115544. Its totient is φ = 1261354017280.

The previous prime is 1304431513981. The next prime is 1304431514033. The reversal of 1304431514021 is 1204151344031.

It can be written as a sum of positive squares in 4 ways, for example, as 66608383396 + 1237823130625 = 258086^2 + 1112575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1304431514021 - 2²² = 1304427319717 is a prime.

It is a super-3 number, since 3×1304431514021³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304431514521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140771486 + ... + 140780751.

It is an arithmetic number, because the mean of its divisors is an integer number (168509014443).

Almost surely, 2^{1304431514021} is an apocalyptic number.

It is an amenable number.

1304431514021 is a deficient number, since it is larger than the sum of its proper divisors (43640601523).

1304431514021 is a wasteful number, since it uses less digits than its factorization.

1304431514021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281552391.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1304431514021 its reverse (1204151344031), we get a palindrome (2508582858052).

The spelling of 1304431514021 in words is "one trillion, three hundred four billion, four hundred thirty-one million, five hundred fourteen thousand, twenty-one".