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3101311031021 = 71997663733427
BaseRepresentation
bin101101001000010100100…
…010101101011011101101
3101222111000200211220011022
4231020110202231123231
5401302441110443041
610332420030303525
7440030243545340
oct55102442553355
911874020756138
103101311031021
11a96293253895
1242107a957ba5
131965b5b3a538
14aa16610a457
1555a13aec24b
hex2d2148ad6ed

3101311031021 has 16 divisors (see below), whose sum is σ = 3546770702976. Its totient is φ = 2656455673536.

The previous prime is 3101311030991. The next prime is 3101311031029. The reversal of 3101311031021 is 1201301131013.

3101311031021 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3101311031021 - 210 = 3101311029997 is a prime.

It is a super-2 number, since 2×31013110310212 (a number of 26 digits) 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 (3101311031029) 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, 92761910 + ... + 92795336.

It is an arithmetic number, because the mean of its divisors is an integer number (221673168936).

Almost surely, 23101311031021 is an apocalyptic number.

It is an amenable number.

3101311031021 is a deficient number, since it is larger than the sum of its proper divisors (445459671955).

3101311031021 is a wasteful number, since it uses less digits than its factorization.

3101311031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42068.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 3101311031021 its reverse (1201301131013), we get a palindrome (4302612162034).

The spelling of 3101311031021 in words is "three trillion, one hundred one billion, three hundred eleven million, thirty-one thousand, twenty-one".

Divisors: 1 7 1997 6637 13979 33427 46459 233989 13254089 66753719 92778623 221854999 467276033 1552984993 443044433003 3101311031021