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231043001 = 767492629
BaseRepresentation
bin11011100010101…
…10111110111001
3121002202012102012
431301112332321
5433121334001
634532015305
75503555520
oct1561267671
9532665365
10231043001
11109466032
1265461535
1338b35c47
14229834b7
151543c2bb
hexdc56fb9

231043001 has 8 divisors (see below), whose sum is σ = 267990720. Its totient is φ = 195080688.

The previous prime is 231042991. The next prime is 231043003. The reversal of 231043001 is 100340132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-231043001 is a prime.

It is a super-3 number, since 3×2310430013 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231043003) 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, 245846 + ... + 246783.

It is an arithmetic number, because the mean of its divisors is an integer number (33498840).

Almost surely, 2231043001 is an apocalyptic number.

It is an amenable number.

231043001 is a deficient number, since it is larger than the sum of its proper divisors (36947719).

231043001 is an equidigital number, since it uses as much as digits as its factorization.

231043001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492703.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231043001 is about 15200.0987167847. The cubic root of 231043001 is about 613.6173145060.

Adding to 231043001 its reverse (100340132), we get a palindrome (331383133).

The spelling of 231043001 in words is "two hundred thirty-one million, forty-three thousand, one".

Divisors: 1 7 67 469 492629 3448403 33006143 231043001