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231022041 = 377007347
BaseRepresentation
bin11011100010100…
…01110111011001
3121002201010122220
431301101313121
5433120201131
634531334253
75503440435
oct1561216731
9532633586
10231022041
11109451308
1265451389
1338b29543
14229799c5
1515435e96
hexdc51dd9

231022041 has 4 divisors (see below), whose sum is σ = 308029392. Its totient is φ = 154014692.

The previous prime is 231022039. The next prime is 231022069. The reversal of 231022041 is 140220132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231022041 - 21 = 231022039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231022041.

It is not an unprimeable number, because it can be changed into a prime (231022541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38503671 + ... + 38503676.

It is an arithmetic number, because the mean of its divisors is an integer number (77007348).

Almost surely, 2231022041 is an apocalyptic number.

It is an amenable number.

231022041 is a deficient number, since it is larger than the sum of its proper divisors (77007351).

231022041 is an equidigital number, since it uses as much as digits as its factorization.

231022041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77007350.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 231022041 is about 15199.4092319406. The cubic root of 231022041 is about 613.5987583529.

Adding to 231022041 its reverse (140220132), we get a palindrome (371242173).

The spelling of 231022041 in words is "two hundred thirty-one million, twenty-two thousand, forty-one".

Divisors: 1 3 77007347 231022041