4345131 has 8 divisors (see below), whose sum is σ = 6621184. Its totient is φ = 2482920.

The previous prime is 4345127. The next prime is 4345147. The reversal of 4345131 is 1315434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4345131 - 2² = 4345127 is a prime.

It is a super-2 number, since 2×4345131² = 37760326814322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 206911 = 4345131 / (4 + 3 + 4 + 5 + 1 + 3 + 1).

It is a d-powerful number, because it can be written as 4⁶ + 3¹² + 4⁹ + 5⁹ + 1 + 3¹³ + 1 .

It is a Duffinian number.

4345131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4345098 and 4345107.

It is not an unprimeable number, because it can be changed into a prime (4345111) 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, 103435 + ... + 103476.

It is an arithmetic number, because the mean of its divisors is an integer number (827648).

Almost surely, 2^4345131 is an apocalyptic number.

4345131 is a deficient number, since it is larger than the sum of its proper divisors (2276053).

4345131 is a wasteful number, since it uses less digits than its factorization.

4345131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206921.

The product of its digits is 720, while the sum is 21.

The square root of 4345131 is about 2084.4977812413. The cubic root of 4345131 is about 163.1802615137.

It can be divided in two parts, 434 and 5131, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 4345131 in words is "four million, three hundred forty-five thousand, one hundred thirty-one".