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1013131 = 71011433
BaseRepresentation
bin11110111010110001011
31220110202101
43313112023
5224410011
633414231
711416510
oct3672613
91813671
101013131
116321a9
1240a377
132961b2
141c5307
151502c1
hexf758b

1013131 has 8 divisors (see below), whose sum is σ = 1170144. Its totient is φ = 859200.

The previous prime is 1013063. The next prime is 1013143. The reversal of 1013131 is 1313101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1013131 - 27 = 1013003 is a prime.

It is a super-2 number, since 2×10131312 = 2052868846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (146268).

21013131 is an apocalyptic number.

1013131 is a deficient number, since it is larger than the sum of its proper divisors (157013).

1013131 is a wasteful number, since it uses less digits than its factorization.

1013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 1013131 is about 1006.5440874597. The cubic root of 1013131 is about 100.4357980418.

Adding to 1013131 its reverse (1313101), we get a palindrome (2326232).

The spelling of 1013131 in words is "one million, thirteen thousand, one hundred thirty-one".

Divisors: 1 7 101 707 1433 10031 144733 1013131