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1313024223 = 371722316493
BaseRepresentation
bin100111001000011…
…0010100011011111
310101111200112121210
41032100302203133
510142113233343
6334142355503
744352343650
oct11620624337
93344615553
101313024223
11614193595
1230788bb93
1317c048214
14c6551527
157a414333
hex4e4328df

1313024223 has 32 divisors (see below), whose sum is σ = 2128121856. Its totient is φ = 702955008.

The previous prime is 1313024129. The next prime is 1313024231. The reversal of 1313024223 is 3224203131.

It is not a de Polignac number, because 1313024223 - 28 = 1313023967 is a prime.

It is a super-2 number, since 2×13130242232 = 3448065220369507458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1313024223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313024263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71365 + ... + 87857.

It is an arithmetic number, because the mean of its divisors is an integer number (66503808).

Almost surely, 21313024223 is an apocalyptic number.

1313024223 is a deficient number, since it is larger than the sum of its proper divisors (815097633).

1313024223 is a wasteful number, since it uses less digits than its factorization.

1313024223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16743.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1313024223 is about 36235.6761079464. The cubic root of 1313024223 is about 1095.0255334844.

Adding to 1313024223 its reverse (3224203131), we get a palindrome (4537227354).

The spelling of 1313024223 in words is "one billion, three hundred thirteen million, twenty-four thousand, two hundred twenty-three".

Divisors: 1 3 7 17 21 51 119 223 357 669 1561 3791 4683 11373 16493 26537 49479 79611 115451 280381 346353 841143 1962667 3677939 5888001 11033817 25745573 62524963 77236719 187574889 437674741 1313024223