20130220312 has 32 divisors (see below), whose sum is σ = 39432322800. Its totient is φ = 9621808000.

The previous prime is 20130220307. The next prime is 20130220351. The reversal of 20130220312 is 21302203102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406114 + ... + 452977.

Almost surely, 2^20130220312 is an apocalyptic number.

It is an amenable number.

20130220312 is a deficient number, since it is larger than the sum of its proper divisors (19302102488).

20130220312 is a wasteful number, since it uses less digits than its factorization.

20130220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859227 (or 859223 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20130220312 its reverse (21302203102), we get a palindrome (41432423414).

The spelling of 20130220312 in words is "twenty billion, one hundred thirty million, two hundred twenty thousand, three hundred twelve".