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8980231 = 13690787
BaseRepresentation
bin100010010000…
…011100000111
3121220020120011
4202100130013
54244331411
6520251051
7136221301
oct42203407
917806504
108980231
115083a87
123010a87
131b25660
14129a971
15bc5c21
hex890707

8980231 has 4 divisors (see below), whose sum is σ = 9671032. Its totient is φ = 8289432.

The previous prime is 8980229. The next prime is 8980253. The reversal of 8980231 is 1320898.

8980231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320898 = 2660449.

It is a cyclic number.

It is not a de Polignac number, because 8980231 - 21 = 8980229 is a prime.

It is a super-2 number, since 2×89802312 = 161289097626722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8980193 and 8980202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8980031) 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, 345381 + ... + 345406.

It is an arithmetic number, because the mean of its divisors is an integer number (2417758).

Almost surely, 28980231 is an apocalyptic number.

8980231 is a deficient number, since it is larger than the sum of its proper divisors (690801).

8980231 is a wasteful number, since it uses less digits than its factorization.

8980231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690800.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 8980231 is about 2996.7033553557. The cubic root of 8980231 is about 207.8559700007.

The spelling of 8980231 in words is "eight million, nine hundred eighty thousand, two hundred thirty-one".

Divisors: 1 13 690787 8980231