123401523000 has 256 divisors, whose sum is σ = 463174732800. Its totient is φ = 26721446400.

The previous prime is 123401522939. The next prime is 123401523013. The reversal of 123401523000 is 325104321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 244362 + ... + 553638.

It is an arithmetic number, because the mean of its divisors is an integer number (1809276300).

Almost surely, 2^123401523000 is an apocalyptic number.

123401523000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123401523000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231587366400).

123401523000 is an abundant number, since it is smaller than the sum of its proper divisors (339773209800).

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

123401523000 is a wasteful number, since it uses less digits than its factorization.

123401523000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309327 (or 309313 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 123401523000 its reverse (325104321), we get a palindrome (123726627321).

The spelling of 123401523000 in words is "one hundred twenty-three billion, four hundred one million, five hundred twenty-three thousand".