123031332312 has 32 divisors (see below), whose sum is σ = 351518092800. Its totient is φ = 35151809184.

The previous prime is 123031332289. The next prime is 123031332317. The reversal of 123031332312 is 213233130321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031332317) 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 7 ways as a sum of consecutive naturals, for example, 366164512 + ... + 366164847.

It is an arithmetic number, because the mean of its divisors is an integer number (10984940400).

Almost surely, 2^123031332312 is an apocalyptic number.

123031332312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123031332312 is an abundant number, since it is smaller than the sum of its proper divisors (228486760488).

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

123031332312 is a wasteful number, since it uses less digits than its factorization.

123031332312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732329375 (or 732329371 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 123031332312 its reverse (213233130321), we get a palindrome (336264462633).

The spelling of 123031332312 in words is "one hundred twenty-three billion, thirty-one million, three hundred thirty-two thousand, three hundred twelve".