123020222031 has 24 divisors (see below), whose sum is σ = 206523058560. Its totient is φ = 69105788496.

The previous prime is 123020221997. The next prime is 123020222041. The reversal of 123020222031 is 130222020321.

It is not a de Polignac number, because 123020222031 - 2¹⁹ = 123019697743 is a prime.

It is a super-2 number, since 2×123020222031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123020221995 and 123020222013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020222041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16544605 + ... + 16552038.

It is an arithmetic number, because the mean of its divisors is an integer number (8605127440).

Almost surely, 2^123020222031 is an apocalyptic number.

123020222031 is a deficient number, since it is larger than the sum of its proper divisors (83502836529).

123020222031 is a wasteful number, since it uses less digits than its factorization.

123020222031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33096715 (or 33096712 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123020222031 its reverse (130222020321), we get a palindrome (253242242352).

The spelling of 123020222031 in words is "one hundred twenty-three billion, twenty million, two hundred twenty-two thousand, thirty-one".