123311130 has 64 divisors (see below), whose sum is σ = 301529088. Its totient is φ = 32270400.

The previous prime is 123311129. The next prime is 123311141. The reversal of 123311130 is 31113321.

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 (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738307 + ... + 738473.

It is an arithmetic number, because the mean of its divisors is an integer number (4711392).

Almost surely, 2^123311130 is an apocalyptic number.

123311130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123311130 is an abundant number, since it is smaller than the sum of its proper divisors (178217958).

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

123311130 is a wasteful number, since it uses less digits than its factorization.

123311130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

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

The square root of 123311130 is about 11104.5544710267. The cubic root of 123311130 is about 497.7379550715.

Adding to 123311130 its reverse (31113321), we get a palindrome (154424451).

The spelling of 123311130 in words is "one hundred twenty-three million, three hundred eleven thousand, one hundred thirty".