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238231401 = 32312172837
BaseRepresentation
bin11100011001100…
…01111101101001
3121121021102001020
432030301331221
5441441401101
635350043053
75621635122
oct1614617551
9547242036
10238231401
11112525861
1267949489
133a481b35
14238d5049
1515dac136
hexe331f69

238231401 has 16 divisors (see below), whose sum is σ = 331841664. Its totient is φ = 151737344.

The previous prime is 238231397. The next prime is 238231417. The reversal of 238231401 is 104132832.

It is a cyclic number.

It is not a de Polignac number, because 238231401 - 22 = 238231397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (238231471) 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, 82555 + ... + 85391.

It is an arithmetic number, because the mean of its divisors is an integer number (20740104).

Almost surely, 2238231401 is an apocalyptic number.

It is an amenable number.

238231401 is a deficient number, since it is larger than the sum of its proper divisors (93610263).

238231401 is a wasteful number, since it uses less digits than its factorization.

238231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 238231401 is about 15434.7465479677. The cubic root of 238231401 is about 619.9162226378.

The spelling of 238231401 in words is "two hundred thirty-eight million, two hundred thirty-one thousand, four hundred one".

Divisors: 1 3 23 69 1217 2837 3651 8511 27991 65251 83973 195753 3452629 10357887 79410467 238231401