4156131 has 20 divisors (see below), whose sum is σ = 6475912. Its totient is φ = 2370816.

The previous prime is 4156093. The next prime is 4156151. The reversal of 4156131 is 1316514.

It is not a de Polignac number, because 4156131 - 2¹¹ = 4154083 is a prime.

It is a super-2 number, since 2×4156131² = 34546849778322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4156098 and 4156107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156151) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6915 + ... + 7491.

Almost surely, 2^4156131 is an apocalyptic number.

4156131 is a deficient number, since it is larger than the sum of its proper divisors (2319781).

4156131 is an frugal number, since it uses more digits than its factorization.

4156131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 587 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 4156131 is about 2038.6591181460. The cubic root of 4156131 is about 160.7791553015.

The spelling of 4156131 in words is "four million, one hundred fifty-six thousand, one hundred thirty-one".