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31313439141 = 348721432881
BaseRepresentation
bin11101001010011011…
…010010100110100101
32222211021202112011020
4131022123102212211
51003112220023031
622215111401353
72155655561325
oct351233224645
988737675136
1031313439141
1112309690326
12609a983259
132c5052711a
141730a67285
15c340c1096
hex74a6d29a5

31313439141 has 8 divisors (see below), whose sum is σ = 41836985664. Its totient is φ = 20832759360.

The previous prime is 31313439107. The next prime is 31313439167. The reversal of 31313439141 is 14193431313.

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

It is not a de Polignac number, because 31313439141 - 26 = 31313439077 is a prime.

It is a super-2 number, since 2×313134391412 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313439191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10714980 + ... + 10717901.

It is an arithmetic number, because the mean of its divisors is an integer number (5229623208).

Almost surely, 231313439141 is an apocalyptic number.

It is an amenable number.

31313439141 is a deficient number, since it is larger than the sum of its proper divisors (10523546523).

31313439141 is a wasteful number, since it uses less digits than its factorization.

31313439141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21433371.

The product of its digits is 11664, while the sum is 33.

The spelling of 31313439141 in words is "thirty-one billion, three hundred thirteen million, four hundred thirty-nine thousand, one hundred forty-one".

Divisors: 1 3 487 1461 21432881 64298643 10437813047 31313439141