123023440413 has 32 divisors (see below), whose sum is σ = 187240190720. Its totient is φ = 79774528320.

The previous prime is 123023440409. The next prime is 123023440447. The reversal of 123023440413 is 314044320321.

123023440413 is a `hidden beast` number, since 1 + 2 + 302 + 344 + 0 + 4 + 13 = 666.

It is not a de Polignac number, because 123023440413 - 2² = 123023440409 is a prime.

It is a super-2 number, since 2×123023440413² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023440013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3586323 + ... + 3620463.

It is an arithmetic number, because the mean of its divisors is an integer number (5851255960).

Almost surely, 2^123023440413 is an apocalyptic number.

It is an amenable number.

123023440413 is a deficient number, since it is larger than the sum of its proper divisors (64216750307).

123023440413 is a wasteful number, since it uses less digits than its factorization.

123023440413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37794 (or 37788 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 123023440413 its reverse (314044320321), we get a palindrome (437067760734).

The spelling of 123023440413 in words is "one hundred twenty-three billion, twenty-three million, four hundred forty thousand, four hundred thirteen".