1123403153623 has 2 divisors, whose sum is σ = 1123403153624. Its totient is φ = 1123403153622.

The previous prime is 1123403153513. The next prime is 1123403153641. The reversal of 1123403153623 is 3263513043211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123403153623 is a prime.

It is a super-2 number, since 2×1123403153623² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123403753623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561701576811 + 561701576812.

It is an arithmetic number, because the mean of its divisors is an integer number (561701576812).

Almost surely, 2^{1123403153623} is an apocalyptic number.

1123403153623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123403153623 is an equidigital number, since it uses as much as digits as its factorization.

1123403153623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 1123403153623 its reverse (3263513043211), we get a palindrome (4386916196834).

The spelling of 1123403153623 in words is "one trillion, one hundred twenty-three billion, four hundred three million, one hundred fifty-three thousand, six hundred twenty-three".