123100223031 has 6 divisors (see below), whose sum is σ = 177811433280. Its totient is φ = 82066815348.

The previous prime is 123100223027. The next prime is 123100223063. The reversal of 123100223031 is 130322001321.

It is not a de Polignac number, because 123100223031 - 2² = 123100223027 is a prime.

It is a super-2 number, since 2×123100223031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123100222995 and 123100223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123100223021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6838901271 + ... + 6838901288.

It is an arithmetic number, because the mean of its divisors is an integer number (29635238880).

Almost surely, 2^123100223031 is an apocalyptic number.

123100223031 is a deficient number, since it is larger than the sum of its proper divisors (54711210249).

123100223031 is a wasteful number, since it uses less digits than its factorization.

123100223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13677802565 (or 13677802562 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123100223031 its reverse (130322001321), we get a palindrome (253422224352).

The spelling of 123100223031 in words is "one hundred twenty-three billion, one hundred million, two hundred twenty-three thousand, thirty-one".