123431219 has 8 divisors (see below), whose sum is σ = 125458368. Its totient is φ = 121409640.

The previous prime is 123431207. The next prime is 123431227. The reversal of 123431219 is 912134321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123431219 is a prime.

It is a super-2 number, since 2×123431219² = 30470531647651922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123431719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85784 + ... + 87210.

It is an arithmetic number, because the mean of its divisors is an integer number (15682296).

Almost surely, 2^123431219 is an apocalyptic number.

123431219 is a deficient number, since it is larger than the sum of its proper divisors (2027149).

123431219 is a wasteful number, since it uses less digits than its factorization.

123431219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785.

The product of its digits is 1296, while the sum is 26.

The square root of 123431219 is about 11109.9603509644. The cubic root of 123431219 is about 497.8994799885.

The spelling of 123431219 in words is "one hundred twenty-three million, four hundred thirty-one thousand, two hundred nineteen".