31130067 has 4 divisors (see below), whose sum is σ = 41506760. Its totient is φ = 20753376.

The previous prime is 31130051. The next prime is 31130081. The reversal of 31130067 is 76003113.

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

It is not a de Polignac number, because 31130067 - 2⁴ = 31130051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31130087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5188342 + ... + 5188347.

It is an arithmetic number, because the mean of its divisors is an integer number (10376690).

Almost surely, 2^31130067 is an apocalyptic number.

31130067 is a deficient number, since it is larger than the sum of its proper divisors (10376693).

31130067 is a wasteful number, since it uses less digits than its factorization.

31130067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10376692.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 31130067 is about 5579.4324980234. The cubic root of 31130067 is about 314.5767962542.

The spelling of 31130067 in words is "thirty-one million, one hundred thirty thousand, sixty-seven".