Base | Representation |
---|---|
bin | 11101001111001000… |
… | …000100111110111101 |
3 | 10000000210010111102022 |
4 | 131033020010332331 |
5 | 1003242411214301 |
6 | 22231005405525 |
7 | 2160634023404 |
oct | 351710047675 |
9 | 100023114368 |
10 | 31392288701 |
11 | 1234a146154 |
12 | 61012698a5 |
13 | 2c63973977 |
14 | 173b31063b |
15 | c3ae98d1b |
hex | 74f204fbd |
31392288701 has 2 divisors, whose sum is σ = 31392288702. Its totient is φ = 31392288700.
The previous prime is 31392288667. The next prime is 31392288703. The reversal of 31392288701 is 10788229313.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 31113432100 + 278856601 = 176390^2 + 16699^2 .
It is a cyclic number.
It is not a de Polignac number, because 31392288701 - 26 = 31392288637 is a prime.
Together with 31392288703, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (31392288703) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15696144350 + 15696144351.
It is an arithmetic number, because the mean of its divisors is an integer number (15696144351).
Almost surely, 231392288701 is an apocalyptic number.
It is an amenable number.
31392288701 is a deficient number, since it is larger than the sum of its proper divisors (1).
31392288701 is an equidigital number, since it uses as much as digits as its factorization.
31392288701 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 145152, while the sum is 44.
The spelling of 31392288701 in words is "thirty-one billion, three hundred ninety-two million, two hundred eighty-eight thousand, seven hundred one".
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