153321313 has 4 divisors (see below), whose sum is σ = 153346240. Its totient is φ = 153296388.

The previous prime is 153321307. The next prime is 153321331. The reversal of 153321313 is 313123351.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 313123351 = 149 ⋅2101499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153321313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153321613) 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, 4108 + ... + 17986.

It is an arithmetic number, because the mean of its divisors is an integer number (38336560).

Almost surely, 2^153321313 is an apocalyptic number.

It is an amenable number.

153321313 is a deficient number, since it is larger than the sum of its proper divisors (24927).

153321313 is a wasteful number, since it uses less digits than its factorization.

153321313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24926.

The product of its digits is 810, while the sum is 22.

The square root of 153321313 is about 12382.2983730808. The cubic root of 153321313 is about 535.2222711676. Note that the first 4 decimals are identical.

Adding to 153321313 its reverse (313123351), we get a palindrome (466444664).

The spelling of 153321313 in words is "one hundred fifty-three million, three hundred twenty-one thousand, three hundred thirteen".