31142867 has 8 divisors (see below), whose sum is σ = 35637600. Its totient is φ = 26659584.

The previous prime is 31142857. The next prime is 31142869. The reversal of 31142867 is 76824113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31142867 - 2⁶ = 31142803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31142869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4109 + ... + 8897.

It is an arithmetic number, because the mean of its divisors is an integer number (4454700).

Almost surely, 2^31142867 is an apocalyptic number.

31142867 is a deficient number, since it is larger than the sum of its proper divisors (4494733).

31142867 is an equidigital number, since it uses as much as digits as its factorization.

31142867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5725.

The product of its digits is 8064, while the sum is 32.

The square root of 31142867 is about 5580.5794502005. The cubic root of 31142867 is about 314.6199060365.

The spelling of 31142867 in words is "thirty-one million, one hundred forty-two thousand, eight hundred sixty-seven".