123431612 has 12 divisors (see below), whose sum is σ = 218964816. Its totient is φ = 60870240.

The previous prime is 123431579. The next prime is 123431617. The reversal of 123431612 is 216134321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123431617) 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 in 3 ways as a sum of consecutive naturals, for example, 211064 + ... + 211647.

It is an arithmetic number, because the mean of its divisors is an integer number (18247068).

Almost surely, 2^123431612 is an apocalyptic number.

It is an amenable number.

123431612 is a deficient number, since it is larger than the sum of its proper divisors (95533204).

123431612 is a wasteful number, since it uses less digits than its factorization.

123431612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422788 (or 422786 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 123431612 is about 11109.9780377821. The cubic root of 123431612 is about 497.9000084186.

Adding to 123431612 its reverse (216134321), we get a palindrome (339565933).

The spelling of 123431612 in words is "one hundred twenty-three million, four hundred thirty-one thousand, six hundred twelve".