123431076 has 72 divisors (see below), whose sum is σ = 324979200. Its totient is φ = 39453120.

The previous prime is 123431069. The next prime is 123431081. The reversal of 123431076 is 670134321.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199095 + ... + 199713.

It is an arithmetic number, because the mean of its divisors is an integer number (4513600).

Almost surely, 2^123431076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123431076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162489600).

123431076 is an abundant number, since it is smaller than the sum of its proper divisors (201548124).

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

123431076 is a wasteful number, since it uses less digits than its factorization.

123431076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 123431076 is about 11109.9539152960. The cubic root of 123431076 is about 497.8992877096.

Adding to 123431076 its reverse (670134321), we get a palindrome (793565397).

The spelling of 123431076 in words is "one hundred twenty-three million, four hundred thirty-one thousand, seventy-six".