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74031 = 324677
BaseRepresentation
bin10010000100101111
310202112220
4102010233
54332111
61330423
7425556
oct220457
9122486
1074031
1150691
1236a13
1327909
141cd9d
1516e06
hex1212f

74031 has 4 divisors (see below), whose sum is σ = 98712. Its totient is φ = 49352.

The previous prime is 74027. The next prime is 74047. The reversal of 74031 is 13047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13047 = 34349.

It is a cyclic number.

It is not a de Polignac number, because 74031 - 22 = 74027 is a prime.

It is a super-2 number, since 2×740312 = 10961177922, which contains 22 as substring.

It is a D-number.

74031 is a lucky number.

It is a nialpdrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 74031.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 74031.

It is not an unprimeable number, because it can be changed into a prime (74021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12336 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (24678).

274031 is an apocalyptic number.

74031 is a deficient number, since it is larger than the sum of its proper divisors (24681).

74031 is a wasteful number, since it uses less digits than its factorization.

74031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24680.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 74031 is about 272.0863833418. The cubic root of 74031 is about 41.9892262615.

Adding to 74031 its reverse (13047), we get a palindrome (87078).

The spelling of 74031 in words is "seventy-four thousand, thirty-one".

Divisors: 1 3 24677 74031