123023143 has 4 divisors (see below), whose sum is σ = 124173000. Its totient is φ = 121873288.

The previous prime is 123023141. The next prime is 123023149. The reversal of 123023143 is 341320321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123023143 - 2¹ = 123023141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123023143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574768 + ... + 574981.

It is an arithmetic number, because the mean of its divisors is an integer number (31043250).

Almost surely, 2^123023143 is an apocalyptic number.

123023143 is a deficient number, since it is larger than the sum of its proper divisors (1149857).

123023143 is a wasteful number, since it uses less digits than its factorization.

123023143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149856.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 123023143 is about 11091.5798243532. The cubic root of 123023143 is about 497.3501723010.

Adding to 123023143 its reverse (341320321), we get a palindrome (464343464).

The spelling of 123023143 in words is "one hundred twenty-three million, twenty-three thousand, one hundred forty-three".