20130323012 has 12 divisors (see below), whose sum is σ = 35233546236. Its totient is φ = 10063595520.

The previous prime is 20130322997. The next prime is 20130323023. The reversal of 20130323012 is 21032303102.

It can be written as a sum of positive squares in 2 ways, for example, as 18833170756 + 1297152256 = 137234^2 + 36016^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362333 + ... + 414180.

It is an arithmetic number, because the mean of its divisors is an integer number (2936128853).

Almost surely, 2^20130323012 is an apocalyptic number.

It is an amenable number.

20130323012 is a deficient number, since it is larger than the sum of its proper divisors (15103223224).

20130323012 is a wasteful number, since it uses less digits than its factorization.

20130323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782998 (or 782996 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20130323012 its reverse (21032303102), we get a palindrome (41162626114).

The spelling of 20130323012 in words is "twenty billion, one hundred thirty million, three hundred twenty-three thousand, twelve".