123171130 has 16 divisors (see below), whose sum is σ = 223672104. Its totient is φ = 48832000.

The previous prime is 123171127. The next prime is 123171143. The reversal of 123171130 is 31171321.

It can be written as a sum of positive squares in 4 ways, for example, as 55487601 + 67683529 = 7449^2 + 8227^2 .

It is a super-2 number, since 2×123171130² = 30342254530953800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123171098 and 123171107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53371 + ... + 55630.

Almost surely, 2^123171130 is an apocalyptic number.

123171130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123171130 is a deficient number, since it is larger than the sum of its proper divisors (100500974).

123171130 is a wasteful number, since it uses less digits than its factorization.

123171130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109121.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 123171130 is about 11098.2489609848. The cubic root of 123171130 is about 497.5495165481.

It can be divided in two parts, 1231 and 71130, that added together give a square (72361 = 269²).

The spelling of 123171130 in words is "one hundred twenty-three million, one hundred seventy-one thousand, one hundred thirty".