123423230354 has 4 divisors (see below), whose sum is σ = 185134845534. Its totient is φ = 61711615176.

The previous prime is 123423230339. The next prime is 123423230377. The reversal of 123423230354 is 453032324321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 453032324321 = 11827 ⋅38304923.

It can be written as a sum of positive squares in only one way, i.e., 95281490329 + 28141740025 = 308677^2 + 167755^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123423230354.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30855807587 + ... + 30855807590.

Almost surely, 2^123423230354 is an apocalyptic number.

123423230354 is a deficient number, since it is larger than the sum of its proper divisors (61711615180).

123423230354 is an equidigital number, since it uses as much as digits as its factorization.

123423230354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61711615179.

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 123423230354 its reverse (453032324321), we get a palindrome (576455554675).

The spelling of 123423230354 in words is "one hundred twenty-three billion, four hundred twenty-three million, two hundred thirty thousand, three hundred fifty-four".