123016380 has 24 divisors (see below), whose sum is σ = 344446032. Its totient is φ = 32804352.

The previous prime is 123016373. The next prime is 123016381. The reversal of 123016380 is 83610321.

It is a self number, because there is not a number n which added to its sum of digits gives 123016380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123016381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025077 + ... + 1025196.

It is an arithmetic number, because the mean of its divisors is an integer number (14351918).

Almost surely, 2^123016380 is an apocalyptic number.

123016380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123016380 is an abundant number, since it is smaller than the sum of its proper divisors (221429652).

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

123016380 is a wasteful number, since it uses less digits than its factorization.

123016380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050285 (or 2050283 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 123016380 is about 11091.2749492563. The cubic root of 123016380 is about 497.3410584579.

It can be divided in two parts, 12301 and 6380, that added together give a palindrome (18681).

The spelling of 123016380 in words is "one hundred twenty-three million, sixteen thousand, three hundred eighty".