323131403 has 8 divisors (see below), whose sum is σ = 369641472. Its totient is φ = 276708456.

The previous prime is 323131399. The next prime is 323131441. The reversal of 323131403 is 304131323.

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 323131403 - 2² = 323131399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323131453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13625 + ... + 28842.

It is an arithmetic number, because the mean of its divisors is an integer number (46205184).

Almost surely, 2^323131403 is an apocalyptic number.

323131403 is a deficient number, since it is larger than the sum of its proper divisors (46510069).

323131403 is a wasteful number, since it uses less digits than its factorization.

323131403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43561.

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

The square root of 323131403 is about 17975.8561131313. The cubic root of 323131403 is about 686.2142336782.

Adding to 323131403 its reverse (304131323), we get a palindrome (627262726).

The spelling of 323131403 in words is "three hundred twenty-three million, one hundred thirty-one thousand, four hundred three".