123311434 has 4 divisors (see below), whose sum is σ = 184967154. Its totient is φ = 61655716.

The previous prime is 123311431. The next prime is 123311467. The reversal of 123311434 is 434113321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434113321 = 157 ⋅2765053.

It can be written as a sum of positive squares in only one way, i.e., 100300225 + 23011209 = 10015^2 + 4797^2 .

It is not an unprimeable number, because it can be changed into a prime (123311431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30827857 + ... + 30827860.

Almost surely, 2^123311434 is an apocalyptic number.

123311434 is a deficient number, since it is larger than the sum of its proper divisors (61655720).

123311434 is an equidigital number, since it uses as much as digits as its factorization.

123311434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61655719.

The product of its digits is 864, while the sum is 22.

The square root of 123311434 is about 11104.5681590956. The cubic root of 123311434 is about 497.7383640971.

Adding to 123311434 its reverse (434113321), we get a palindrome (557424755).

The spelling of 123311434 in words is "one hundred twenty-three million, three hundred eleven thousand, four hundred thirty-four".