123430300551 has 20 divisors (see below), whose sum is σ = 185101012272. Its totient is φ = 81966670848.

The previous prime is 123430300549. The next prime is 123430300597. The reversal of 123430300551 is 155003034321.

123430300551 is a `hidden beast` number, since 12 + 343 + 0 + 300 + 5 + 5 + 1 = 666.

It is not a de Polignac number, because 123430300551 - 2¹ = 123430300549 is a prime.

It is a super-2 number, since 2×123430300551² (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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (123430300541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2943835 + ... + 2985468.

Almost surely, 2^123430300551 is an apocalyptic number.

123430300551 is a deficient number, since it is larger than the sum of its proper divisors (61670711721).

123430300551 is an equidigital number, since it uses as much as digits as its factorization.

123430300551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929572 (or 5929563 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 123430300551 its reverse (155003034321), we get a palindrome (278433334872).

The spelling of 123430300551 in words is "one hundred twenty-three billion, four hundred thirty million, three hundred thousand, five hundred fifty-one".