31142107 has 4 divisors (see below), whose sum is σ = 31298800. Its totient is φ = 30985416.

The previous prime is 31142101. The next prime is 31142117. The reversal of 31142107 is 70124113.

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

It is a cyclic number.

It is not a de Polignac number, because 31142107 - 2³ = 31142099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31142101) 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, 78048 + ... + 78445.

It is an arithmetic number, because the mean of its divisors is an integer number (7824700).

Almost surely, 2^31142107 is an apocalyptic number.

31142107 is a deficient number, since it is larger than the sum of its proper divisors (156693).

31142107 is a wasteful number, since it uses less digits than its factorization.

31142107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156692.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 31142107 is about 5580.5113564977. The cubic root of 31142107 is about 314.6173467231.

The spelling of 31142107 in words is "thirty-one million, one hundred forty-two thousand, one hundred seven".