123130202231 has 4 divisors (see below), whose sum is σ = 123365633352. Its totient is φ = 122894771112.

The previous prime is 123130202203. The next prime is 123130202233. The reversal of 123130202231 is 132202031321.

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 123130202231 - 2¹⁴ = 123130185847 is a prime.

It is a super-2 number, since 2×123130202231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123130202233) 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 3 ways as a sum of consecutive naturals, for example, 117714776 + ... + 117715821.

It is an arithmetic number, because the mean of its divisors is an integer number (30841408338).

Almost surely, 2^123130202231 is an apocalyptic number.

123130202231 is a deficient number, since it is larger than the sum of its proper divisors (235431121).

123130202231 is an equidigital number, since it uses as much as digits as its factorization.

123130202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235431120.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123130202231 its reverse (132202031321), we get a palindrome (255332233552).

The spelling of 123130202231 in words is "one hundred twenty-three billion, one hundred thirty million, two hundred two thousand, two hundred thirty-one".