20310123310112 has 48 divisors (see below), whose sum is σ = 40168555983360. Its totient is φ = 10108593664512.

The previous prime is 20310123310109. The next prime is 20310123310123. The reversal of 20310123310112 is 21101332101302.

It is a happy number.

It is a super-2 number, since 2×20310123310112² (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, 81004013 + ... + 81254355.

It is an arithmetic number, because the mean of its divisors is an integer number (836844916320).

Almost surely, 2^{20310123310112} is an apocalyptic number.

It is an amenable number.

20310123310112 is a deficient number, since it is larger than the sum of its proper divisors (19858432673248).

20310123310112 is a wasteful number, since it uses less digits than its factorization.

20310123310112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261945 (or 261937 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20310123310112 its reverse (21101332101302), we get a palindrome (41411455411414).

The spelling of 20310123310112 in words is "twenty trillion, three hundred ten billion, one hundred twenty-three million, three hundred ten thousand, one hundred twelve".