20011312312 has 16 divisors (see below), whose sum is σ = 37523253600. Its totient is φ = 10005111360.

The previous prime is 20011312253. The next prime is 20011312381. The reversal of 20011312312 is 21321311002.

It is a congruent number.

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, 117889 + ... + 232207.

It is an arithmetic number, because the mean of its divisors is an integer number (2345203350).

Almost surely, 2^20011312312 is an apocalyptic number.

It is an amenable number.

20011312312 is a deficient number, since it is larger than the sum of its proper divisors (17511941288).

20011312312 is a wasteful number, since it uses less digits than its factorization.

20011312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136206 (or 136202 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20011312312 its reverse (21321311002), we get a palindrome (41332623314).

The spelling of 20011312312 in words is "twenty billion, eleven million, three hundred twelve thousand, three hundred twelve".