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1316227031 = 72983191409
BaseRepresentation
bin100111001110100…
…0000011111010111
310101201201021001022
41032131000133113
510143423231111
6334335151355
744421513410
oct11635003727
93351637038
101316227031
11615a80939
1230897555b
1317c8c9c82
14c6b46807
157a8482db
hex4e7407d7

1316227031 has 32 divisors (see below), whose sum is σ = 1586995200. Its totient is φ = 1067915520.

The previous prime is 1316227027. The next prime is 1316227061. The reversal of 1316227031 is 1307226131.

It is not a de Polignac number, because 1316227031 - 22 = 1316227027 is a prime.

It is a super-2 number, since 2×13162270312 = 3464907194270149922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316227061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3217955 + ... + 3218363.

It is an arithmetic number, because the mean of its divisors is an integer number (49593600).

Almost surely, 21316227031 is an apocalyptic number.

1316227031 is a deficient number, since it is larger than the sum of its proper divisors (270768169).

1316227031 is a wasteful number, since it uses less digits than its factorization.

1316227031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1316227031 is about 36279.8433155382. The cubic root of 1316227031 is about 1095.9151613406.

The spelling of 1316227031 in words is "one billion, three hundred sixteen million, two hundred twenty-seven thousand, thirty-one".

Divisors: 1 7 29 83 191 203 409 581 1337 2407 2863 5539 11861 15853 16849 33947 38773 78119 83027 110971 237629 459737 546833 984463 2265451 3218159 6483877 6891241 15858157 45387139 188032433 1316227031