123631879228 has 288 divisors, whose sum is σ = 288291225600. Its totient is φ = 45792552960.

The previous prime is 123631879199. The next prime is 123631879229. The reversal of 123631879228 is 822978136321.

It is a happy number.

It is a super-2 number, since 2×123631879228² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123631879229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 258103893 + ... + 258104371.

It is an arithmetic number, because the mean of its divisors is an integer number (1001011200).

Almost surely, 2^123631879228 is an apocalyptic number.

It is an amenable number.

123631879228 is an abundant number, since it is smaller than the sum of its proper divisors (164659346372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123631879228 is a wasteful number, since it uses less digits than its factorization.

123631879228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 668 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The spelling of 123631879228 in words is "one hundred twenty-three billion, six hundred thirty-one million, eight hundred seventy-nine thousand, two hundred twenty-eight".