Search a number
-
+
231033149 is a prime number
BaseRepresentation
bin11011100010101…
…00100100111101
3121002201200220022
431301110210331
5433121030044
634531501525
75503515014
oct1561244475
9532650808
10231033149
11109459696
12654578a5
1338b31609
142297da7b
15154393ee
hexdc5493d

231033149 has 2 divisors, whose sum is σ = 231033150. Its totient is φ = 231033148.

The previous prime is 231033119. The next prime is 231033161. The reversal of 231033149 is 941330132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213685924 + 17347225 = 14618^2 + 4165^2 .

It is a cyclic number.

It is not a de Polignac number, because 231033149 - 216 = 230967613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231033119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115516574 + 115516575.

It is an arithmetic number, because the mean of its divisors is an integer number (115516575).

Almost surely, 2231033149 is an apocalyptic number.

It is an amenable number.

231033149 is a deficient number, since it is larger than the sum of its proper divisors (1).

231033149 is an equidigital number, since it uses as much as digits as its factorization.

231033149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 231033149 is about 15199.7746364872. The cubic root of 231033149 is about 613.6085925456.

The spelling of 231033149 in words is "two hundred thirty-one million, thirty-three thousand, one hundred forty-nine".