1123423400771 has 24 divisors (see below), whose sum is σ = 1419995381760. Its totient is φ = 882826030800.

The previous prime is 1123423400761. The next prime is 1123423400773. The reversal of 1123423400771 is 1770043243211.

It is a de Polignac number, because none of the positive numbers 2^k-1123423400771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123423400773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19433795 + ... + 19491516.

It is an arithmetic number, because the mean of its divisors is an integer number (59166474240).

Almost surely, 2^{1123423400771} is an apocalyptic number.

1123423400771 is a deficient number, since it is larger than the sum of its proper divisors (296571980989).

1123423400771 is a wasteful number, since it uses less digits than its factorization.

1123423400771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38925375 (or 38925368 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 1123423400771 its reverse (1770043243211), we get a palindrome (2893466643982).

The spelling of 1123423400771 in words is "one trillion, one hundred twenty-three billion, four hundred twenty-three million, four hundred thousand, seven hundred seventy-one".