1321535134 has 8 divisors (see below), whose sum is σ = 1986442560. Its totient is φ = 659387616.

The previous prime is 1321535123. The next prime is 1321535153. The reversal of 1321535134 is 4315351231.

It is a happy number.

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

It is a super-2 number, since 2×1321535134² = 3492910220792795912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688779 + ... + 690694.

It is an arithmetic number, because the mean of its divisors is an integer number (248305320).

Almost surely, 2^1321535134 is an apocalyptic number.

1321535134 is a deficient number, since it is larger than the sum of its proper divisors (664907426).

1321535134 is a wasteful number, since it uses less digits than its factorization.

1321535134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379954.

The product of its digits is 5400, while the sum is 28.

The square root of 1321535134 is about 36352.9246966458. The cubic root of 1321535134 is about 1097.3863938736.

Adding to 1321535134 its reverse (4315351231), we get a palindrome (5636886365).

The spelling of 1321535134 in words is "one billion, three hundred twenty-one million, five hundred thirty-five thousand, one hundred thirty-four".