2145319 has 4 divisors (see below), whose sum is σ = 2340360. Its totient is φ = 1950280.

The previous prime is 2145307. The next prime is 2145329. The reversal of 2145319 is 9135412.

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 2145319 - 2⁵ = 2145287 is a prime.

It is a super-2 number, since 2×2145319² = 9204787223522, which contains 22 as substring.

2145319 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2145293 and 2145302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145329) 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, 97504 + ... + 97525.

It is an arithmetic number, because the mean of its divisors is an integer number (585090).

2^2145319 is an apocalyptic number.

2145319 is a deficient number, since it is larger than the sum of its proper divisors (195041).

2145319 is a wasteful number, since it uses less digits than its factorization.

2145319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195040.

The product of its digits is 1080, while the sum is 25.

The square root of 2145319 is about 1464.6907523433. The cubic root of 2145319 is about 128.9725518990.

The spelling of 2145319 in words is "two million, one hundred forty-five thousand, three hundred nineteen".