20130311323 has 8 divisors (see below), whose sum is σ = 20771820720. Its totient is φ = 19495969920.

The previous prime is 20130311263. The next prime is 20130311329. The reversal of 20130311323 is 32311303102.

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 20130311323 - 2¹³ = 20130303131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20130311323.

It is not an unprimeable number, because it can be changed into a prime (20130311329) 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, 1786293 + ... + 1797526.

It is an arithmetic number, because the mean of its divisors is an integer number (2596477590).

Almost surely, 2^20130311323 is an apocalyptic number.

20130311323 is a deficient number, since it is larger than the sum of its proper divisors (641509397).

20130311323 is a wasteful number, since it uses less digits than its factorization.

20130311323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583997.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20130311323 its reverse (32311303102), we get a palindrome (52441614425).

The spelling of 20130311323 in words is "twenty billion, one hundred thirty million, three hundred eleven thousand, three hundred twenty-three".