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231070741 = 1121006431
BaseRepresentation
bin11011100010111…
…01110000010101
3121002210121110121
431301131300111
5433123230431
634532351541
75504032426
oct1561356025
9532717417
10231070741
11109484960
12654755b1
1338b45765
142298d64d
1515445611
hexdc5dc15

231070741 has 4 divisors (see below), whose sum is σ = 252077184. Its totient is φ = 210064300.

The previous prime is 231070717. The next prime is 231070747. The reversal of 231070741 is 147070132.

It is a happy number.

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 231070741 - 211 = 231068693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231070747) 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, 10503205 + ... + 10503226.

It is an arithmetic number, because the mean of its divisors is an integer number (63019296).

Almost surely, 2231070741 is an apocalyptic number.

It is an amenable number.

231070741 is a deficient number, since it is larger than the sum of its proper divisors (21006443).

231070741 is a wasteful number, since it uses less digits than its factorization.

231070741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21006442.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 231070741 is about 15201.0111834707. The cubic root of 231070741 is about 613.6418713533.

The spelling of 231070741 in words is "two hundred thirty-one million, seventy thousand, seven hundred forty-one".

Divisors: 1 11 21006431 231070741