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31021311041 = 718792358497
BaseRepresentation
bin11100111001000000…
…111010010001000001
32222001221001212201222
4130321000322101001
51002012423423131
622130114204425
72145510536030
oct347100722101
988057055658
1031021311041
11121797a3146
126018b83715
132c04b54366
141703d42717
15c1861987b
hex73903a441

31021311041 has 8 divisors (see below), whose sum is σ = 35471809920. Its totient is φ = 26575532928.

The previous prime is 31021311029. The next prime is 31021311059. The reversal of 31021311041 is 14011312013.

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

It is not a de Polignac number, because 31021311041 - 214 = 31021294657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31021311241) 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, 1166096 + ... + 1192401.

It is an arithmetic number, because the mean of its divisors is an integer number (4433976240).

Almost surely, 231021311041 is an apocalyptic number.

It is an amenable number.

31021311041 is a deficient number, since it is larger than the sum of its proper divisors (4450498879).

31021311041 is a wasteful number, since it uses less digits than its factorization.

31021311041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360383.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31021311041 its reverse (14011312013), we get a palindrome (45032623054).

The spelling of 31021311041 in words is "thirty-one billion, twenty-one million, three hundred eleven thousand, forty-one".

Divisors: 1 7 1879 13153 2358497 16509479 4431615863 31021311041