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231403045 = 546280609
BaseRepresentation
bin11011100101011…
…10111000100101
3121010102111022011
431302232320211
5433214344140
634543434221
75506615306
oct1562567045
9533374264
10231403045
11109691595
12655b5971
1338c30aa3
1422a387ad
15154adcea
hexdcaee25

231403045 has 4 divisors (see below), whose sum is σ = 277683660. Its totient is φ = 185122432.

The previous prime is 231403037. The next prime is 231403063. The reversal of 231403045 is 540304132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27227524 + 204175521 = 5218^2 + 14289^2 .

It is a cyclic number.

It is not a de Polignac number, because 231403045 - 23 = 231403037 is a prime.

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, 23140300 + ... + 23140309.

It is an arithmetic number, because the mean of its divisors is an integer number (69420915).

Almost surely, 2231403045 is an apocalyptic number.

It is an amenable number.

231403045 is a deficient number, since it is larger than the sum of its proper divisors (46280615).

231403045 is an equidigital number, since it uses as much as digits as its factorization.

231403045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46280614.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 231403045 is about 15211.9375820439. The cubic root of 231403045 is about 613.9358909464.

Adding to 231403045 its reverse (540304132), we get a palindrome (771707177).

The spelling of 231403045 in words is "two hundred thirty-one million, four hundred three thousand, forty-five".

Divisors: 1 5 46280609 231403045