3161231 has 4 divisors (see below), whose sum is σ = 3234792. Its totient is φ = 3087672.

The previous prime is 3161227. The next prime is 3161237. The reversal of 3161231 is 1321613.

3161231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321613 = 397 ⋅3329.

It is a cyclic number.

It is not a de Polignac number, because 3161231 - 2² = 3161227 is a prime.

It is a super-2 number, since 2×3161231² = 19986762870722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36716 + ... + 36801.

It is an arithmetic number, because the mean of its divisors is an integer number (808698).

Almost surely, 2^3161231 is an apocalyptic number.

3161231 is a deficient number, since it is larger than the sum of its proper divisors (73561).

3161231 is an equidigital number, since it uses as much as digits as its factorization.

3161231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73560.

The product of its digits is 108, while the sum is 17.

The square root of 3161231 is about 1777.9850955506. The cubic root of 3161231 is about 146.7637310881.

Adding to 3161231 its reverse (1321613), we get a palindrome (4482844).

The spelling of 3161231 in words is "three million, one hundred sixty-one thousand, two hundred thirty-one".