123430511 has 8 divisors (see below), whose sum is σ = 128374224. Its totient is φ = 118581120.

The previous prime is 123430501. The next prime is 123430543. The reversal of 123430511 is 115034321.

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

It is a cyclic number.

It is not a de Polignac number, because 123430511 - 2¹⁰ = 123429487 is a prime.

It is a super-2 number, since 2×123430511² = 30470182091442242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430501) 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, 20906 + ... + 26151.

It is an arithmetic number, because the mean of its divisors is an integer number (16046778).

Almost surely, 2^123430511 is an apocalyptic number.

123430511 is a deficient number, since it is larger than the sum of its proper divisors (4943713).

123430511 is an equidigital number, since it uses as much as digits as its factorization.

123430511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47161.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 123430511 is about 11109.9284876186. The cubic root of 123430511 is about 497.8985280049.

Adding to 123430511 its reverse (115034321), we get a palindrome (238464832).

The spelling of 123430511 in words is "one hundred twenty-three million, four hundred thirty thousand, five hundred eleven".