123831860 has 12 divisors (see below), whose sum is σ = 260046948. Its totient is φ = 49532736.

The previous prime is 123831847. The next prime is 123831863. The reversal of 123831860 is 68138321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70190884 + 53640976 = 8378^2 + 7324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123831863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3095777 + ... + 3095816.

It is an arithmetic number, because the mean of its divisors is an integer number (21670579).

Almost surely, 2^123831860 is an apocalyptic number.

123831860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123831860 is an abundant number, since it is smaller than the sum of its proper divisors (136215088).

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

123831860 is a wasteful number, since it uses less digits than its factorization.

123831860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191602 (or 6191600 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 123831860 is about 11127.9764557623. The cubic root of 123831860 is about 498.4376029160.

The spelling of 123831860 in words is "one hundred twenty-three million, eight hundred thirty-one thousand, eight hundred sixty".