31124894 has 8 divisors (see below), whose sum is σ = 47278560. Its totient is φ = 15365376.

The previous prime is 31124861. The next prime is 31124897. The reversal of 31124894 is 49842113.

It is a happy number.

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

It is a super-2 number, since 2×31124894² = 1937518053022472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31124894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31124897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98339 + ... + 98654.

It is an arithmetic number, because the mean of its divisors is an integer number (5909820).

Almost surely, 2^31124894 is an apocalyptic number.

31124894 is a deficient number, since it is larger than the sum of its proper divisors (16153666).

31124894 is a wasteful number, since it uses less digits than its factorization.

31124894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197074.

The product of its digits is 6912, while the sum is 32.

The square root of 31124894 is about 5578.9689011501. The cubic root of 31124894 is about 314.5593704868.

The spelling of 31124894 in words is "thirty-one million, one hundred twenty-four thousand, eight hundred ninety-four".