20123012030312 has 32 divisors (see below), whose sum is σ = 37785672983520. Its totient is φ = 10046843010240.

The previous prime is 20123012030293. The next prime is 20123012030339. The reversal of 20123012030312 is 21303021032102.

It is a super-2 number, since 2×20123012030312² (a number of 27 digits) contains 22 as substring.

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, 14798762 + ... + 16101222.

It is an arithmetic number, because the mean of its divisors is an integer number (1180802280735).

Almost surely, 2^{20123012030312} is an apocalyptic number.

It is an amenable number.

20123012030312 is a deficient number, since it is larger than the sum of its proper divisors (17662660953208).

20123012030312 is a wasteful number, since it uses less digits than its factorization.

20123012030312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305281 (or 1305277 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20123012030312 its reverse (21303021032102), we get a palindrome (41426033062414).

The spelling of 20123012030312 in words is "twenty trillion, one hundred twenty-three billion, twelve million, thirty thousand, three hundred twelve".