20130002312 has 32 divisors (see below), whose sum is σ = 43394037120. Its totient is φ = 8575480320.

The previous prime is 20130002281. The next prime is 20130002317. The reversal of 20130002312 is 21320003102.

It is a happy number.

It is a super-2 number, since 2×20130002312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20130002317) 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, 1066889 + ... + 1085592.

It is an arithmetic number, because the mean of its divisors is an integer number (1356063660).

Almost surely, 2^20130002312 is an apocalyptic number.

It is an amenable number.

20130002312 is an abundant number, since it is smaller than the sum of its proper divisors (23264034808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20130002312 is a wasteful number, since it uses less digits than its factorization.

20130002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152661 (or 2152657 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20130002312 its reverse (21320003102), we get a palindrome (41450005414).

The spelling of 20130002312 in words is "twenty billion, one hundred thirty million, two thousand, three hundred twelve".