4378131 has 24 divisors (see below), whose sum is σ = 6726720. Its totient is φ = 2844072.

The previous prime is 4378123. The next prime is 4378133. The reversal of 4378131 is 1318734.

It is not a de Polignac number, because 4378131 - 2³ = 4378123 is a prime.

It is a super-2 number, since 2×4378131² = 38336062106322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4378095 and 4378104.

It is not an unprimeable number, because it can be changed into a prime (4378133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10240 + ... + 10658.

It is an arithmetic number, because the mean of its divisors is an integer number (280280).

Almost surely, 2^4378131 is an apocalyptic number.

4378131 is a deficient number, since it is larger than the sum of its proper divisors (2348589).

4378131 is an equidigital number, since it uses as much as digits as its factorization.

4378131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 465 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 4378131 is about 2092.3983846295. The cubic root of 4378131 is about 163.5923222386.

The spelling of 4378131 in words is "four million, three hundred seventy-eight thousand, one hundred thirty-one".