Base | Representation |
---|---|
bin | 1111100111111… |
… | …11100000000101 |
3 | 100010122001011212 |
4 | 13303333200011 |
5 | 232023214312 |
6 | 21001141205 |
7 | 3151035104 |
oct | 763774005 |
9 | 303561155 |
10 | 131069957 |
11 | 67a92887 |
12 | 37a8a805 |
13 | 212017b5 |
14 | 1359c03b |
15 | b790822 |
hex | 7cff805 |
131069957 has 4 divisors (see below), whose sum is σ = 131728800. Its totient is φ = 130411116.
The previous prime is 131069909. The next prime is 131069987. The reversal of 131069957 is 759960131.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 131069957 - 210 = 131068933 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 (131069987) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329123 + ... + 329520.
It is an arithmetic number, because the mean of its divisors is an integer number (32932200).
Almost surely, 2131069957 is an apocalyptic number.
It is an amenable number.
131069957 is a deficient number, since it is larger than the sum of its proper divisors (658843).
131069957 is an equidigital number, since it uses as much as digits as its factorization.
131069957 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 658842.
The product of its (nonzero) digits is 51030, while the sum is 41.
The square root of 131069957 is about 11448.5788200982. The cubic root of 131069957 is about 507.9656974068.
The spelling of 131069957 in words is "one hundred thirty-one million, sixty-nine thousand, nine hundred fifty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •