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1031132312013 = 37913133211979
BaseRepresentation
bin11110000000101000100…
…01100111000111001101
310122120112101100201221010
433000110101213013031
5113343224332441023
62105410131555433
7134332264016046
oct17002421470715
93576471321833
101031132312013
11368334343781
12147a1015bb79
137630a115a3b
1437c9b0018cd
151bc4e9aa093
hexf0144671cd

1031132312013 has 16 divisors (see below), whose sum is σ = 1402874035200. Its totient is φ = 673538913840.

The previous prime is 1031132312003. The next prime is 1031132312027. The reversal of 1031132312013 is 3102132311301.

It is a happy number.

It is not a de Polignac number, because 1031132312013 - 24 = 1031132311997 is a prime.

It is a super-2 number, since 2×10311323120132 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031132312003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16574943 + ... + 16637036.

It is an arithmetic number, because the mean of its divisors is an integer number (87679627200).

Almost surely, 21031132312013 is an apocalyptic number.

It is an amenable number.

1031132312013 is a deficient number, since it is larger than the sum of its proper divisors (371741723187).

1031132312013 is a wasteful number, since it uses less digits than its factorization.

1031132312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33212192.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1031132312013 its reverse (3102132311301), we get a palindrome (4133264623314).

The spelling of 1031132312013 in words is "one trillion, thirty-one billion, one hundred thirty-two million, three hundred twelve thousand, thirteen".

Divisors: 1 3 79 131 237 393 10349 31047 33211979 99635937 2623746341 4350769249 7871239023 13052307747 343710770671 1031132312013