1355200321 has 8 divisors (see below), whose sum is σ = 1362657960. Its totient is φ = 1347760128.

The previous prime is 1355200307. The next prime is 1355200331. The reversal of 1355200321 is 1230025531.

It can be written as a sum of positive squares in 4 ways, for example, as 1101244225 + 253956096 = 33185^2 + 15936^2 .

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 1355200321 - 2⁹ = 1355199809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1355200292 and 1355200301.

It is not an unprimeable number, because it can be changed into a prime (1355200331) 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, 170095 + ... + 177883.

It is an arithmetic number, because the mean of its divisors is an integer number (170332245).

Almost surely, 2^1355200321 is an apocalyptic number.

It is an amenable number.

1355200321 is a deficient number, since it is larger than the sum of its proper divisors (7457639).

1355200321 is an equidigital number, since it uses as much as digits as its factorization.

1355200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8723.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1355200321 is about 36813.0455273671. The cubic root of 1355200321 is about 1106.6267532398.

Adding to 1355200321 its reverse (1230025531), we get a palindrome (2585225852).

The spelling of 1355200321 in words is "one billion, three hundred fifty-five million, two hundred thousand, three hundred twenty-one".