122531000 has 64 divisors (see below), whose sum is σ = 301860000. Its totient is φ = 46425600.

The previous prime is 122530999. The next prime is 122531009. The reversal of 122531000 is 135221.

It is a happy number.

It is a super-2 number, since 2×122531000² = 30027691922000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122531009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15776 + ... + 22224.

Almost surely, 2^122531000 is an apocalyptic number.

122531000 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 122531000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150930000).

122531000 is an abundant number, since it is smaller than the sum of its proper divisors (179329000).

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

122531000 is a wasteful number, since it uses less digits than its factorization.

122531000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489 (or 6475 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 122531000 is about 11069.3721592509. The cubic root of 122531000 is about 496.6860844522.

Adding to 122531000 its reverse (135221), we get a palindrome (122666221).

The spelling of 122531000 in words is "one hundred twenty-two million, five hundred thirty-one thousand".