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1368130631 = 76111812713
BaseRepresentation
bin101000110001100…
…0000010001000111
310112100101020101212
41101203000101013
510300220140011
6343431442035
745621630020
oct12143002107
93470336355
101368130631
1164230187a
1232222631b
1318a5a096a
14cd9b7c47
158019c08b
hex518c0447

1368130631 has 16 divisors (see below), whose sum is σ = 1591142208. Its totient is φ = 1152057600.

The previous prime is 1368130619. The next prime is 1368130637. The reversal of 1368130631 is 1360318631.

It is a cyclic number.

It is not a de Polignac number, because 1368130631 - 226 = 1301021767 is a prime.

It is a super-2 number, since 2×13681306312 = 3743562846960916322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368130637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502931 + ... + 505643.

It is an arithmetic number, because the mean of its divisors is an integer number (99446388).

Almost surely, 21368130631 is an apocalyptic number.

1368130631 is a deficient number, since it is larger than the sum of its proper divisors (223011577).

1368130631 is a wasteful number, since it uses less digits than its factorization.

1368130631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1368130631 is about 36988.2499045305. The cubic root of 1368130631 is about 1110.1351541189.

The spelling of 1368130631 in words is "one billion, three hundred sixty-eight million, one hundred thirty thousand, six hundred thirty-one".

Divisors: 1 7 61 427 1181 2713 8267 18991 72041 165493 504287 1158451 3204053 22428371 195447233 1368130631