123131210132 has 24 divisors (see below), whose sum is σ = 246668158464. Its totient is φ = 52683574752.

The previous prime is 123131210101. The next prime is 123131210141. The reversal of 123131210132 is 231012131321.

It is a happy number.

It is a super-2 number, since 2×123131210132² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3605363 + ... + 3639354.

It is an arithmetic number, because the mean of its divisors is an integer number (10277839936).

Almost surely, 2^123131210132 is an apocalyptic number.

It is an amenable number.

123131210132 is an abundant number, since it is smaller than the sum of its proper divisors (123536948332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123131210132 is a wasteful number, since it uses less digits than its factorization.

123131210132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7245335 (or 7245333 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123131210132 its reverse (231012131321), we get a palindrome (354143341453).

The spelling of 123131210132 in words is "one hundred twenty-three billion, one hundred thirty-one million, two hundred ten thousand, one hundred thirty-two".