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231980059 = 972391547
BaseRepresentation
bin11011101001110…
…11110000011011
3121011111210211001
431310323300123
5433341330214
635004045431
75514540463
oct1564736033
9534453731
10231980059
11109a46063
1265833877
13390a360c
1422b48ba3
1515574c74
hexdd3bc1b

231980059 has 4 divisors (see below), whose sum is σ = 234371704. Its totient is φ = 229588416.

The previous prime is 231980053. The next prime is 231980069. The reversal of 231980059 is 950089132.

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

It is a cyclic number.

It is not a de Polignac number, because 231980059 - 25 = 231980027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231980053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195677 + ... + 1195870.

It is an arithmetic number, because the mean of its divisors is an integer number (58592926).

Almost surely, 2231980059 is an apocalyptic number.

231980059 is a deficient number, since it is larger than the sum of its proper divisors (2391645).

231980059 is an equidigital number, since it uses as much as digits as its factorization.

231980059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391644.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 231980059 is about 15230.8916022668. The cubic root of 231980059 is about 614.4457597276.

The spelling of 231980059 in words is "two hundred thirty-one million, nine hundred eighty thousand, fifty-nine".

Divisors: 1 97 2391547 231980059