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69350431 = 641108191
BaseRepresentation
bin1000010001000…
…11010000011111
311211111100220111
410020203100133
5120223203211
610514230451
71501316563
oct410432037
9154440814
1069350431
1136168007
121b285427
13114a1c77
1492d36a3
15614d421
hex422341f

69350431 has 4 divisors (see below), whose sum is σ = 69459264. Its totient is φ = 69241600.

The previous prime is 69350419. The next prime is 69350453. The reversal of 69350431 is 13405396.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69350431 - 213 = 69342239 is a prime.

It is a super-2 number, since 2×693504312 = 9618964559771522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69350393 and 69350402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69350461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53455 + ... + 54736.

It is an arithmetic number, because the mean of its divisors is an integer number (17364816).

Almost surely, 269350431 is an apocalyptic number.

69350431 is a deficient number, since it is larger than the sum of its proper divisors (108833).

69350431 is a wasteful number, since it uses less digits than its factorization.

69350431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108832.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 69350431 is about 8327.6906162513. The cubic root of 69350431 is about 410.8497762822.

The spelling of 69350431 in words is "sixty-nine million, three hundred fifty thousand, four hundred thirty-one".

Divisors: 1 641 108191 69350431