Search a number
-
+
31347362 = 23721072
BaseRepresentation
bin111011110010…
…1001010100010
32011222121111102
41313211022202
531011103422
63035514402
7530306504
oct167451242
964877442
1031347362
1116770812
12a5b8a02
136657347
14423dd74
152b43192
hex1de52a2

31347362 has 18 divisors (see below), whose sum is σ = 48782097. Its totient is φ = 15107544.

The previous prime is 31347361. The next prime is 31347389. The reversal of 31347362 is 26374313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25290841 + 6056521 = 5029^2 + 2461^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=3959.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31347361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 292913 + ... + 293019.

Almost surely, 231347362 is an apocalyptic number.

31347362 is a deficient number, since it is larger than the sum of its proper divisors (17434735).

31347362 is an equidigital number, since it uses as much as digits as its factorization.

31347362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 146 counting only the distinct ones).

The product of its digits is 9072, while the sum is 29.

The square root of 31347362 is about 5598.8714934351. The cubic root of 31347362 is about 315.3070391636.

The spelling of 31347362 in words is "thirty-one million, three hundred forty-seven thousand, three hundred sixty-two".

Divisors: 1 2 37 74 107 214 1369 2738 3959 7918 11449 22898 146483 292966 423613 847226 15673681 31347362