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230120331 = 3741267271
BaseRepresentation
bin11011011011101…
…01101110001011
3121001000022202020
431231311232023
5432402322311
634500135523
75462663520
oct1555655613
9531008666
10230120331
111089958a1
12650975a3
13388a1c9c
14227c3147
1515308c06
hexdb75b8b

230120331 has 16 divisors (see below), whose sum is σ = 359213568. Its totient is φ = 128289600.

The previous prime is 230120327. The next prime is 230120333. The reversal of 230120331 is 133021032.

It is not a de Polignac number, because 230120331 - 22 = 230120327 is a prime.

It is a super-2 number, since 2×2301203312 = 105910733479099122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 230120331.

It is not an unprimeable number, because it can be changed into a prime (230120333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132775 + ... + 134496.

It is an arithmetic number, because the mean of its divisors is an integer number (22450848).

Almost surely, 2230120331 is an apocalyptic number.

230120331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230120331 is a deficient number, since it is larger than the sum of its proper divisors (129093237).

230120331 is a wasteful number, since it uses less digits than its factorization.

230120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267322.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 230120331 is about 15169.7175649384. The cubic root of 230120331 is about 612.7993980385.

Adding to 230120331 its reverse (133021032), we get a palindrome (363141363).

The spelling of 230120331 in words is "two hundred thirty million, one hundred twenty thousand, three hundred thirty-one".

Divisors: 1 3 7 21 41 123 287 861 267271 801813 1870897 5612691 10958111 32874333 76706777 230120331