20120311323 has 24 divisors (see below), whose sum is σ = 33231883776. Its totient is φ = 11491297200.

The previous prime is 20120311313. The next prime is 20120311333. The reversal of 20120311323 is 32311302102.

20120311323 is a `hidden beast` number, since 20 + 12 + 0 + 311 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (20120311313) and next prime (20120311333).

It is not a de Polignac number, because 20120311323 - 2⁹ = 20120310811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120311296 and 20120311305.

It is not an unprimeable number, because it can be changed into a prime (20120311313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38958 + ... + 204348.

It is an arithmetic number, because the mean of its divisors is an integer number (1384661824).

Almost surely, 2^20120311323 is an apocalyptic number.

20120311323 is a deficient number, since it is larger than the sum of its proper divisors (13111572453).

20120311323 is a wasteful number, since it uses less digits than its factorization.

20120311323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167335 (or 167332 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20120311323 its reverse (32311302102), we get a palindrome (52431613425).

The spelling of 20120311323 in words is "twenty billion, one hundred twenty million, three hundred eleven thousand, three hundred twenty-three".