20123012233031 has 4 divisors (see below), whose sum is σ = 21306718834992. Its totient is φ = 18939305631072.

The previous prime is 20123012233003. The next prime is 20123012233039. The reversal of 20123012233031 is 13033221032102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20123012233031 - 2³⁸ = 19848134326087 is a prime.

It is a super-2 number, since 2×20123012233031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123012232988 and 20123012233006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123012233039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591853300955 + ... + 591853300988.

It is an arithmetic number, because the mean of its divisors is an integer number (5326679708748).

Almost surely, 2^{20123012233031} is an apocalyptic number.

20123012233031 is a deficient number, since it is larger than the sum of its proper divisors (1183706601961).

20123012233031 is a wasteful number, since it uses less digits than its factorization.

20123012233031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183706601960.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20123012233031 its reverse (13033221032102), we get a palindrome (33156233265133).

The spelling of 20123012233031 in words is "twenty trillion, one hundred twenty-three billion, twelve million, two hundred thirty-three thousand, thirty-one".