1321402133 has 4 divisors (see below), whose sum is σ = 1349517120. Its totient is φ = 1293287148.

The previous prime is 1321402123. The next prime is 1321402151. The reversal of 1321402133 is 3312041231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321402133 - 2²⁴ = 1304624917 is a prime.

It is a super-2 number, since 2×1321402133² = 3492207194193899378, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321402123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14057423 + ... + 14057516.

It is an arithmetic number, because the mean of its divisors is an integer number (337379280).

Almost surely, 2^1321402133 is an apocalyptic number.

It is an amenable number.

1321402133 is a deficient number, since it is larger than the sum of its proper divisors (28114987).

1321402133 is an equidigital number, since it uses as much as digits as its factorization.

1321402133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28114986.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1321402133 is about 36351.0953480084. The cubic root of 1321402133 is about 1097.3495785113.

Adding to 1321402133 its reverse (3312041231), we get a palindrome (4633443364).

The spelling of 1321402133 in words is "one billion, three hundred twenty-one million, four hundred two thousand, one hundred thirty-three".