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13701331 = 72279619
BaseRepresentation
bin110100010001…
…000011010011
3221210002200201
4310101003103
512001420311
61205400031
7224313400
oct64210323
927702621
1013701331
117809016
124709017
132ab94c7
141b692a7
1513099c1
hexd110d3

13701331 has 6 divisors (see below), whose sum is σ = 15938340. Its totient is φ = 11743956.

The previous prime is 13701319. The next prime is 13701341. The reversal of 13701331 is 13310731.

It is a happy number.

It is not a de Polignac number, because 13701331 - 215 = 13668563 is a prime.

It is a super-2 number, since 2×137013312 = 375452942343122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13701299 and 13701308.

It is not an unprimeable number, because it can be changed into a prime (13701301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139761 + ... + 139858.

It is an arithmetic number, because the mean of its divisors is an integer number (2656390).

Almost surely, 213701331 is an apocalyptic number.

13701331 is a deficient number, since it is larger than the sum of its proper divisors (2237009).

13701331 is an equidigital number, since it uses as much as digits as its factorization.

13701331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279633 (or 279626 counting only the distinct ones).

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 13701331 is about 3701.5308995063. The cubic root of 13701331 is about 239.2879997745.

It can be divided in two parts, 1370 and 1331, that added together give a triangular number (2701 = T73).

The spelling of 13701331 in words is "thirteen million, seven hundred one thousand, three hundred thirty-one".

Divisors: 1 7 49 279619 1957333 13701331