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31042 = 2111783
BaseRepresentation
bin111100101000010
31120120201
413211002
51443132
6355414
7156334
oct74502
946521
1031042
1121360
1215b6a
131118b
14b454
1592e7
hex7942

31042 has 16 divisors (see below), whose sum is σ = 54432. Its totient is φ = 13120.

The previous prime is 31039. The next prime is 31051. The reversal of 31042 is 24013.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333 + ... + 415.

It is an arithmetic number, because the mean of its divisors is an integer number (3402).

231042 is an apocalyptic number.

31042 is a deficient number, since it is larger than the sum of its proper divisors (23390).

31042 is a wasteful number, since it uses less digits than its factorization.

31042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 31042 is about 176.1874002305. The cubic root of 31042 is about 31.4279870021.

Adding to 31042 its reverse (24013), we get a palindrome (55055).

The spelling of 31042 in words is "thirty-one thousand, forty-two".

Divisors: 1 2 11 17 22 34 83 166 187 374 913 1411 1826 2822 15521 31042