Base | Representation |
---|---|
bin | 1110000110111000111000… |
… | …01101101010010000011101 |
3 | 11001211202211202022011020211 |
4 | 13003130130031222100131 |
5 | 13031240122130401023 |
6 | 145551440221412421 |
7 | 6351224260062415 |
oct | 703343415522035 |
9 | 131752752264224 |
10 | 31023022122013 |
11 | 9980876245a69 |
12 | 359057740a111 |
13 | 14405c624119c |
14 | 7937451dd645 |
15 | 38bea776ea0d |
hex | 1c371c36a41d |
31023022122013 has 16 divisors (see below), whose sum is σ = 31746261997296. Its totient is φ = 30308812554240.
The previous prime is 31023022121969. The next prime is 31023022122017. The reversal of 31023022122013 is 31022122032013.
It can be written as a sum of positive squares in 8 ways, for example, as 3667998700804 + 27355023421209 = 1915202^2 + 5230203^2 .
It is a cyclic number.
It is not a de Polignac number, because 31023022122013 - 233 = 31014432187421 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31023022122017) 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, 1246045 + ... + 7974877.
It is an arithmetic number, because the mean of its divisors is an integer number (1984141374831).
Almost surely, 231023022122013 is an apocalyptic number.
It is an amenable number.
31023022122013 is a deficient number, since it is larger than the sum of its proper divisors (723239875283).
31023022122013 is a wasteful number, since it uses less digits than its factorization.
31023022122013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6729504.
The product of its (nonzero) digits is 864, while the sum is 22.
Adding to 31023022122013 its reverse (31022122032013), we get a palindrome (62045144154026).
The spelling of 31023022122013 in words is "thirty-one trillion, twenty-three billion, twenty-two million, one hundred twenty-two thousand, thirteen".
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