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311320300031 = 13193734065029
BaseRepresentation
bin1001000011111000010…
…00101100100111111111
31002202120110001212000122
410201330020230213333
520100040444100111
6355004002245155
731330543613456
oct4417410544777
91082513055018
10311320300031
11110037214264
12504046567bb
1323485210bb0
14110d478bb9d
15817141bcdb
hex487c22c9ff

311320300031 has 16 divisors (see below), whose sum is σ = 362451919200. Its totient is φ = 264889657728.

The previous prime is 311320300007. The next prime is 311320300043. The reversal of 311320300031 is 130003023113.

It is a cyclic number.

It is not a de Polignac number, because 311320300031 - 26 = 311320299967 is a prime.

It is a super-2 number, since 2×3113203000312 (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311320299982 and 311320300009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311320300001) 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, 17023376 + ... + 17041653.

It is an arithmetic number, because the mean of its divisors is an integer number (22653244950).

Almost surely, 2311320300031 is an apocalyptic number.

311320300031 is a deficient number, since it is larger than the sum of its proper divisors (51131619169).

311320300031 is a wasteful number, since it uses less digits than its factorization.

311320300031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34065098.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 311320300031 its reverse (130003023113), we get a palindrome (441323323144).

The spelling of 311320300031 in words is "three hundred eleven billion, three hundred twenty million, three hundred thousand, thirty-one".

Divisors: 1 13 19 37 247 481 703 9139 34065029 442845377 647235551 1260406073 8414062163 16385278949 23947715387 311320300031