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231870332 = 2271038161
BaseRepresentation
bin11011101001000…
…00111101111100
3121011022020022002
431310200331330
5433324322312
635001441432
75513602541
oct1564407574
9534266262
10231870332
11109980681
12657a0278
13390656a5
1422b1abc8
15155524c2
hexdd20f7c

231870332 has 12 divisors (see below), whose sum is σ = 405879936. Its totient is φ = 115904640.

The previous prime is 231870323. The next prime is 231870349. The reversal of 231870332 is 233078132.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 231870295 and 231870304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24332 + ... + 32492.

It is an arithmetic number, because the mean of its divisors is an integer number (33823328).

Almost surely, 2231870332 is an apocalyptic number.

It is an amenable number.

231870332 is a deficient number, since it is larger than the sum of its proper divisors (174009604).

231870332 is a wasteful number, since it uses less digits than its factorization.

231870332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15268 (or 15266 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 231870332 is about 15227.2890561649. The cubic root of 231870332 is about 614.3488664528.

The spelling of 231870332 in words is "two hundred thirty-one million, eight hundred seventy thousand, three hundred thirty-two".

Divisors: 1 2 4 7103 8161 14206 16322 28412 32644 57967583 115935166 231870332