152303321 has 4 divisors (see below), whose sum is σ = 153651252. Its totient is φ = 150955392.

The previous prime is 152303317. The next prime is 152303329. The reversal of 152303321 is 123303251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123303251 = 3881 ⋅31771.

It can be written as a sum of positive squares in 2 ways, for example, as 11999296 + 140304025 = 3464^2 + 11845^2 .

It is a cyclic number.

It is not a de Polignac number, because 152303321 - 2² = 152303317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 152303293 and 152303302.

It is not an unprimeable number, because it can be changed into a prime (152303329) 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, 673796 + ... + 674021.

It is an arithmetic number, because the mean of its divisors is an integer number (38412813).

Almost surely, 2^152303321 is an apocalyptic number.

It is an amenable number.

152303321 is a deficient number, since it is larger than the sum of its proper divisors (1347931).

152303321 is a wasteful number, since it uses less digits than its factorization.

152303321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347930.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 152303321 is about 12341.1231660656. The cubic root of 152303321 is about 534.0350860907.

Adding to 152303321 its reverse (123303251), we get a palindrome (275606572).

The spelling of 152303321 in words is "one hundred fifty-two million, three hundred three thousand, three hundred twenty-one".