31124993 has 8 divisors (see below), whose sum is σ = 31464000. Its totient is φ = 30788208.

The previous prime is 31124987. The next prime is 31124999. The reversal of 31124993 is 39942113.

It is an interprime number because it is at equal distance from previous prime (31124987) and next prime (31124999).

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

It is a cyclic number.

It is not a de Polignac number, because 31124993 - 2²⁴ = 14347777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31124999) 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 7 ways as a sum of consecutive naturals, for example, 45230 + ... + 45912.

It is an arithmetic number, because the mean of its divisors is an integer number (3933000).

Almost surely, 2^31124993 is an apocalyptic number.

It is an amenable number.

31124993 is a deficient number, since it is larger than the sum of its proper divisors (339007).

31124993 is a wasteful number, since it uses less digits than its factorization.

31124993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111.

The product of its digits is 5832, while the sum is 32.

The square root of 31124993 is about 5578.9777737503. The cubic root of 31124993 is about 314.5597039964.

It can be divided in two parts, 31 and 124993, that multiplied together give a palindrome (3874783).

The spelling of 31124993 in words is "thirty-one million, one hundred twenty-four thousand, nine hundred ninety-three".