123102102031 has 2 divisors, whose sum is σ = 123102102032. Its totient is φ = 123102102030.

The previous prime is 123102101999. The next prime is 123102102073. The reversal of 123102102031 is 130201201321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123102102031 - 2⁵ = 123102101999 is a prime.

It is a super-2 number, since 2×123102102031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123102101996 and 123102102014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123102702031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551051015 + 61551051016.

It is an arithmetic number, because the mean of its divisors is an integer number (61551051016).

Almost surely, 2^123102102031 is an apocalyptic number.

123102102031 is a deficient number, since it is larger than the sum of its proper divisors (1).

123102102031 is an equidigital number, since it uses as much as digits as its factorization.

123102102031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123102102031 its reverse (130201201321), we get a palindrome (253303303352).

The spelling of 123102102031 in words is "one hundred twenty-three billion, one hundred two million, one hundred two thousand, thirty-one".