Search a number
-
+
93431369 = 23321721
BaseRepresentation
bin1011001000110…
…10011001001001
320111210210202002
411210122121021
5142404300434
613134320345
72213103443
oct544323111
9214723662
1093431369
1148815409
12273590b5
1316483a45
14c5a1493
15830857e
hex591a649

93431369 has 6 divisors (see below), whose sum is σ = 93888606. Its totient is φ = 92976320.

The previous prime is 93431353. The next prime is 93431381. The reversal of 93431369 is 96313439.

It can be written as a sum of positive squares in 3 ways, for example, as 3655744 + 89775625 = 1912^2 + 9475^2 .

It is not a de Polignac number, because 93431369 - 24 = 93431353 is a prime.

It is a super-2 number, since 2×934313692 = 17458841426428322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (52488) is a multiple of the sum of its prime factors (2187).

It is not an unprimeable number, because it can be changed into a prime (93431309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53429 + ... + 55149.

It is an arithmetic number, because the mean of its divisors is an integer number (15648101).

Almost surely, 293431369 is an apocalyptic number.

It is an amenable number.

93431369 is a deficient number, since it is larger than the sum of its proper divisors (457237).

93431369 is an equidigital number, since it uses as much as digits as its factorization.

93431369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 1954 counting only the distinct ones).

The product of its digits is 52488, while the sum is 38.

The square root of 93431369 is about 9665.9903269143. The cubic root of 93431369 is about 453.7649054189.

The spelling of 93431369 in words is "ninety-three million, four hundred thirty-one thousand, three hundred sixty-nine".

Divisors: 1 233 1721 54289 400993 93431369