130919 has 4 divisors (see below), whose sum is σ = 132480. Its totient is φ = 129360.
The previous prime is 130873. The next prime is 130927. The reversal of 130919 is 919031.
130919 is nontrivially palindromic in base 11.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 130919 - 212 = 126823 is a prime.
It is a super-2 number, since 2×1309192 = 34279569122, which contains 22 as substring.
It is a Duffinian number.
It is a plaindrome in base 13 and base 15.
It is a junction number, because it is equal to n+sod(n) for n = 130894 and 130903.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130969) 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, 647 + ... + 824.
It is an arithmetic number, because the mean of its divisors is an integer number (33120).
2130919 is an apocalyptic number.
130919 is a deficient number, since it is larger than the sum of its proper divisors (1561).
130919 is an equidigital number, since it uses as much as digits as its factorization.
130919 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1560.
The product of its (nonzero) digits is 243, while the sum is 23.
The square root of 130919 is about 361.8273068744. The cubic root of 130919 is about 50.7770609641. Note that the first 3 decimals are identical.
The spelling of 130919 in words is "one hundred thirty thousand, nine hundred nineteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •