123731641000 has 64 divisors (see below), whose sum is σ = 315853162560. Its totient is φ = 44993320000.

The previous prime is 123731640997. The next prime is 123731641003. The reversal of 123731641000 is 146137321.

It is an interprime number because it is at equal distance from previous prime (123731640997) and next prime (123731641003).

It is a self number, because there is not a number n which added to its sum of digits gives 123731641000.

It is not an unprimeable number, because it can be changed into a prime (123731641003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5613166 + ... + 5635165.

It is an arithmetic number, because the mean of its divisors is an integer number (4935205665).

Almost surely, 2^123731641000 is an apocalyptic number.

123731641000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123731641000 is an abundant number, since it is smaller than the sum of its proper divisors (192121521560).

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

123731641000 is a wasteful number, since it uses less digits than its factorization.

123731641000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11248363 (or 11248349 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 123731641000 its reverse (146137321), we get a palindrome (123877778321).

The spelling of 123731641000 in words is "one hundred twenty-three billion, seven hundred thirty-one million, six hundred forty-one thousand".