Base | Representation |
---|---|
bin | 11101001101101100… |
… | …011010001010110111 |
3 | 2222222002220121210220 |
4 | 131031230122022313 |
5 | 1003220233230411 |
6 | 22224350345423 |
7 | 2160222536622 |
oct | 351554321267 |
9 | 88862817726 |
10 | 31368258231 |
11 | 12337622762 |
12 | 60b51bb273 |
13 | 2c5b9abb5b |
14 | 1738056db9 |
15 | c38cedb06 |
hex | 74db1a2b7 |
31368258231 has 8 divisors (see below), whose sum is σ = 42954732144. Its totient is φ = 20346978240.
The previous prime is 31368258133. The next prime is 31368258247. The reversal of 31368258231 is 13285286313.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 31368258231 - 226 = 31301149367 is a prime.
It is a super-2 number, since 2×313682582312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31368258281) 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, 141298350 + ... + 141298571.
It is an arithmetic number, because the mean of its divisors is an integer number (5369341518).
Almost surely, 231368258231 is an apocalyptic number.
31368258231 is a deficient number, since it is larger than the sum of its proper divisors (11586473913).
31368258231 is a wasteful number, since it uses less digits than its factorization.
31368258231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 282596961.
The product of its digits is 207360, while the sum is 42.
The spelling of 31368258231 in words is "thirty-one billion, three hundred sixty-eight million, two hundred fifty-eight thousand, two hundred thirty-one".
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