3131867 has 4 divisors (see below), whose sum is σ = 3208296. Its totient is φ = 3055440.

The previous prime is 3131861. The next prime is 3131879. The reversal of 3131867 is 7681313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7681313 = 503 ⋅15271.

It is a cyclic number.

It is not a de Polignac number, because 3131867 - 2⁴ = 3131851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131861) 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, 38153 + ... + 38234.

It is an arithmetic number, because the mean of its divisors is an integer number (802074).

Almost surely, 2^3131867 is an apocalyptic number.

3131867 is a deficient number, since it is larger than the sum of its proper divisors (76429).

3131867 is an equidigital number, since it uses as much as digits as its factorization.

3131867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76428.

The product of its digits is 3024, while the sum is 29.

The square root of 3131867 is about 1769.7081680322. The cubic root of 3131867 is about 146.3078977912.

The spelling of 3131867 in words is "three million, one hundred thirty-one thousand, eight hundred sixty-seven".