1321145435 has 4 divisors (see below), whose sum is σ = 1585374528. Its totient is φ = 1056916344.

The previous prime is 1321145387. The next prime is 1321145443. The reversal of 1321145435 is 5345411231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321145435 - 2⁸ = 1321145179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321145398 and 1321145407.

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, 132114539 + ... + 132114548.

It is an arithmetic number, because the mean of its divisors is an integer number (396343632).

Almost surely, 2^1321145435 is an apocalyptic number.

1321145435 is a deficient number, since it is larger than the sum of its proper divisors (264229093).

1321145435 is an equidigital number, since it uses as much as digits as its factorization.

1321145435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264229092.

The product of its digits is 7200, while the sum is 29.

The square root of 1321145435 is about 36347.5643613159. The cubic root of 1321145435 is about 1097.2785161962.

Adding to 1321145435 its reverse (5345411231), we get a palindrome (6666556666).

The spelling of 1321145435 in words is "one billion, three hundred twenty-one million, one hundred forty-five thousand, four hundred thirty-five".