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231670130 = 2531747323
BaseRepresentation
bin11011100111100…
…00000101110010
3121010221001200012
431303300011302
5433301421010
634553254522
75512110056
oct1563600562
9533831605
10231670130
1110985421a
1265704442
1338cc5523
1422aa7c66
1515513005
hexdcf0172

231670130 has 16 divisors (see below), whose sum is σ = 430458624. Its totient is φ = 89678640.

The previous prime is 231670129. The next prime is 231670147. The reversal of 231670130 is 31076132.

It is a happy number.

231670130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231670096 and 231670105.

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, 373352 + ... + 373971.

It is an arithmetic number, because the mean of its divisors is an integer number (26903664).

Almost surely, 2231670130 is an apocalyptic number.

231670130 is a deficient number, since it is larger than the sum of its proper divisors (198788494).

231670130 is a wasteful number, since it uses less digits than its factorization.

231670130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747361.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 231670130 is about 15220.7138465973. The cubic root of 231670130 is about 614.1720013831.

The spelling of 231670130 in words is "two hundred thirty-one million, six hundred seventy thousand, one hundred thirty".

Divisors: 1 2 5 10 31 62 155 310 747323 1494646 3736615 7473230 23167013 46334026 115835065 231670130