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231210001 = 1135958549
BaseRepresentation
bin11011100011111…
…11110000010001
3121010001200111101
431301333300101
5433142210001
634535344401
75505152431
oct1561776021
9533050441
10231210001
1110956a550
1265522101
1338b93c69
14229c82c1
1515471a01
hexdc7fc11

231210001 has 8 divisors (see below), whose sum is σ = 252936000. Its totient is φ = 209601840.

The previous prime is 231209983. The next prime is 231210017. The reversal of 231210001 is 100012132.

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

It is a cyclic number.

It is not a de Polignac number, because 231210001 - 211 = 231207953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231210001.

It is not an unprimeable number, because it can be changed into a prime (231210041) 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, 25326 + ... + 33223.

It is an arithmetic number, because the mean of its divisors is an integer number (31617000).

Almost surely, 2231210001 is an apocalyptic number.

It is an amenable number.

231210001 is a deficient number, since it is larger than the sum of its proper divisors (21725999).

231210001 is a wasteful number, since it uses less digits than its factorization.

231210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58919.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 231210001 is about 15205.5911098517. The cubic root of 231210001 is about 613.7651216404.

Adding to 231210001 its reverse (100012132), we get a palindrome (331222133).

The spelling of 231210001 in words is "two hundred thirty-one million, two hundred ten thousand, one".

Divisors: 1 11 359 3949 58549 644039 21019091 231210001