Base | Representation |
---|---|
bin | 1111100010110… |
… | …10001111000111 |
3 | 100002100122121112 |
4 | 13301122033013 |
5 | 231340034111 |
6 | 20534435235 |
7 | 3142215416 |
oct | 761321707 |
9 | 302318545 |
10 | 130393031 |
11 | 6767023a |
12 | 37802b1b |
13 | 21025652 |
14 | 1346347d |
15 | b6a9e8b |
hex | 7c5a3c7 |
130393031 has 8 divisors (see below), whose sum is σ = 131300400. Its totient is φ = 129489408.
The previous prime is 130393027. The next prime is 130393057.
130393031 is nontrivially palindromic in base 10.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 130393031 - 22 = 130393027 is a prime.
It is a super-2 number, since 2×1303930312 = 34004685066733922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 130392988 and 130393006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130393331) 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, 106535 + ... + 107751.
It is an arithmetic number, because the mean of its divisors is an integer number (16412550).
Almost surely, 2130393031 is an apocalyptic number.
130393031 is a deficient number, since it is larger than the sum of its proper divisors (907369).
130393031 is a wasteful number, since it uses less digits than its factorization.
130393031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1873.
The product of its (nonzero) digits is 729, while the sum is 23.
The square root of 130393031 is about 11418.9767930406. The cubic root of 130393031 is about 507.0897050236.
The spelling of 130393031 in words is "one hundred thirty million, three hundred ninety-three thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •