Search a number
-
+
870233231 = 71922872861
BaseRepresentation
bin110011110111101…
…011010010001111
32020122111102120102
4303313223102033
53240234430411
6222204041315
730364601060
oct6367532217
92218442512
10870233231
1140725111a
1220353323b
1310b3a390a
148380c567
15515ebd3b
hex33deb48f

870233231 has 16 divisors (see below), whose sum is σ = 1047720960. Its totient is φ = 706099680.

The previous prime is 870233201. The next prime is 870233237. The reversal of 870233231 is 132332078.

It is a cyclic number.

It is not a de Polignac number, because 870233231 - 26 = 870233167 is a prime.

It is a super-2 number, since 2×8702332312 = 1514611752673398722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870233194 and 870233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870233237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302741 + ... + 305601.

It is an arithmetic number, because the mean of its divisors is an integer number (65482560).

Almost surely, 2870233231 is an apocalyptic number.

870233231 is a deficient number, since it is larger than the sum of its proper divisors (177487729).

870233231 is a wasteful number, since it uses less digits than its factorization.

870233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 870233231 is about 29499.7157782918. The cubic root of 870233231 is about 954.7255704807.

The spelling of 870233231 in words is "eight hundred seventy million, two hundred thirty-three thousand, two hundred thirty-one".

Divisors: 1 7 19 133 2287 2861 16009 20027 43453 54359 304171 380513 6543107 45801749 124319033 870233231