4215131 has 4 divisors (see below), whose sum is σ = 4437000. Its totient is φ = 3993264.

The previous prime is 4215103. The next prime is 4215157. The reversal of 4215131 is 1315124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4215131 is a prime.

It is a super-2 number, since 2×4215131² = 35534658694322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4215191) 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, 110906 + ... + 110943.

It is an arithmetic number, because the mean of its divisors is an integer number (1109250).

Almost surely, 2^4215131 is an apocalyptic number.

4215131 is a deficient number, since it is larger than the sum of its proper divisors (221869).

4215131 is a wasteful number, since it uses less digits than its factorization.

4215131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221868.

The product of its digits is 120, while the sum is 17.

The square root of 4215131 is about 2053.0784203240. The cubic root of 4215131 is about 161.5363846875.

The spelling of 4215131 in words is "four million, two hundred fifteen thousand, one hundred thirty-one".