20313012120123 has 16 divisors (see below), whose sum is σ = 27754521804576. Its totient is φ = 13206991445760.

The previous prime is 20313012120101. The next prime is 20313012120133. The reversal of 20313012120123 is 32102121031302.

It is not a de Polignac number, because 20313012120123 - 2⁵ = 20313012120091 is a prime.

It is a super-2 number, since 2×20313012120123² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20313012120123.

It is not an unprimeable number, because it can be changed into a prime (20313012120133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29178036 + ... + 29866097.

It is an arithmetic number, because the mean of its divisors is an integer number (1734657612786).

Almost surely, 2^{20313012120123} is an apocalyptic number.

20313012120123 is a deficient number, since it is larger than the sum of its proper divisors (7441509684453).

20313012120123 is a wasteful number, since it uses less digits than its factorization.

20313012120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59046974.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20313012120123 its reverse (32102121031302), we get a palindrome (52415133151425).

The spelling of 20313012120123 in words is "twenty trillion, three hundred thirteen billion, twelve million, one hundred twenty thousand, one hundred twenty-three".