123031000 has 32 divisors (see below), whose sum is σ = 287894880. Its totient is φ = 49212000.

The previous prime is 123030959. The next prime is 123031081. The reversal of 123031000 is 130321.

It is a super-2 number, since 2×123031000² = 30273253922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60516 + ... + 62515.

It is an arithmetic number, because the mean of its divisors is an integer number (8996715).

Almost surely, 2^123031000 is an apocalyptic number.

123031000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123031000 is an abundant number, since it is smaller than the sum of its proper divisors (164863880).

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

123031000 is a wasteful number, since it uses less digits than its factorization.

123031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123052 (or 123038 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 123031000 is about 11091.9340062948. The cubic root of 123031000 is about 497.3607600030.

Adding to 123031000 its reverse (130321), we get a palindrome (123161321).

The spelling of 123031000 in words is "one hundred twenty-three million, thirty-one thousand".