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30913353 = 331144939
BaseRepresentation
bin111010111101…
…1001101001001
32011011120011000
41311323031021
530403211403
63022325213
7523521252
oct165731511
964146130
1030913353
11164a4729
12a429809
136534933
144169b29
152aa97a3
hex1d7b349

30913353 has 8 divisors (see below), whose sum is σ = 45797600. Its totient is φ = 20608884.

The previous prime is 30913343. The next prime is 30913427. The reversal of 30913353 is 35331903.

30913353 is a `hidden beast` number, since 309 + 1 + 3 + 353 = 666.

It is not a de Polignac number, because 30913353 - 29 = 30912841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1144939 = 30913353 / (3 + 0 + 9 + 1 + 3 + 3 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30913343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572443 + ... + 572496.

It is an arithmetic number, because the mean of its divisors is an integer number (5724700).

Almost surely, 230913353 is an apocalyptic number.

It is an amenable number.

30913353 is a deficient number, since it is larger than the sum of its proper divisors (14884247).

30913353 is a wasteful number, since it uses less digits than its factorization.

30913353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144948 (or 1144942 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 27.

The square root of 30913353 is about 5559.9777877254. The cubic root of 30913353 is about 313.8451134098.

The spelling of 30913353 in words is "thirty million, nine hundred thirteen thousand, three hundred fifty-three".

Divisors: 1 3 9 27 1144939 3434817 10304451 30913353