123331101000 has 128 divisors (see below), whose sum is σ = 395193202560. Its totient is φ = 31999392000.

The previous prime is 123331100969. The next prime is 123331101011. The reversal of 123331101000 is 101133321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444546 + ... + 666545.

It is an arithmetic number, because the mean of its divisors is an integer number (3087446895).

Almost surely, 2^123331101000 is an apocalyptic number.

123331101000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123331101000 is an abundant number, since it is smaller than the sum of its proper divisors (271862101560).

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

123331101000 is a wasteful number, since it uses less digits than its factorization.

123331101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111152 (or 1111138 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 123331101000 its reverse (101133321), we get a palindrome (123432234321).

The spelling of 123331101000 in words is "one hundred twenty-three billion, three hundred thirty-one million, one hundred one thousand".