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1343281 = 192612
BaseRepresentation
bin101000111111100110001
32112020122011
411013330301
5320441111
644442521
714263162
oct5077461
92466564
101343281
11838255
12549441
13380554
1426d769
151b8021
hex147f31

1343281 has 9 divisors (see below), whose sum is σ = 1441323. Its totient is φ = 1251720.

The previous prime is 1343263. The next prime is 1343299. The reversal of 1343281 is 1823431.

The square root of 1343281 is 1159.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (1343263) and next prime (1343299).

It can be written as a sum of positive squares in only one way, i.e., 43681 + 1299600 = 209^2 + 1140^2 .

It is a de Polignac number, because none of the positive numbers 2k-1343281 is a prime.

It is a super-2 number, since 2×13432812 = 3608807689922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1343081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21991 + ... + 22051.

It is an arithmetic number, because the mean of its divisors is an integer number (160147).

21343281 is an apocalyptic number.

1343281 is the 1159-th square number.

1343281 is the 580-th centered octagonal number.

It is an amenable number.

1343281 is a deficient number, since it is larger than the sum of its proper divisors (98042).

1343281 is an frugal number, since it uses more digits than its factorization.

1343281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 80 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The cubic root of 1343281 is about 110.3372843140.

Multiplying 1343281 by its product of digits (576), we get a square (773729856 = 278162).

The spelling of 1343281 in words is "one million, three hundred forty-three thousand, two hundred eighty-one".

Divisors: 1 19 61 361 1159 3721 22021 70699 1343281