20123233113031 has 4 divisors (see below), whose sum is σ = 20124375003952. Its totient is φ = 20122091222112.

The previous prime is 20123233113013. The next prime is 20123233113037. The reversal of 20123233113031 is 13031133232102.

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 20123233113031 - 2⁷ = 20123233112903 is a prime.

It is a super-2 number, since 2×20123233113031² (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 = 20123233112987 and 20123233113005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123233113037) 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, 570919026 + ... + 570954271.

It is an arithmetic number, because the mean of its divisors is an integer number (5031093750988).

Almost surely, 2^{20123233113031} is an apocalyptic number.

20123233113031 is a deficient number, since it is larger than the sum of its proper divisors (1141890921).

20123233113031 is a wasteful number, since it uses less digits than its factorization.

20123233113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141890920.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20123233113031 its reverse (13031133232102), we get a palindrome (33154366345133).

The spelling of 20123233113031 in words is "twenty trillion, one hundred twenty-three billion, two hundred thirty-three million, one hundred thirteen thousand, thirty-one".