323143031 has 4 divisors (see below), whose sum is σ = 337192752. Its totient is φ = 309093312.

The previous prime is 323143019. The next prime is 323143061. The reversal of 323143031 is 130341323.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323143031 is a prime.

It is a super-2 number, since 2×323143031² = 208842836967733922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323142994 and 323143012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323143061) 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, 7024826 + ... + 7024871.

It is an arithmetic number, because the mean of its divisors is an integer number (84298188).

Almost surely, 2^323143031 is an apocalyptic number.

323143031 is a deficient number, since it is larger than the sum of its proper divisors (14049721).

323143031 is a wasteful number, since it uses less digits than its factorization.

323143031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14049720.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 323143031 is about 17976.1795440522. The cubic root of 323143031 is about 686.2224648016. Note that the first 3 decimals are identical.

Adding to 323143031 its reverse (130341323), we get a palindrome (453484354).

The spelling of 323143031 in words is "three hundred twenty-three million, one hundred forty-three thousand, thirty-one".