31124004 has 24 divisors (see below), whose sum is σ = 73500000. Its totient is φ = 10249344.

The previous prime is 31124003. The next prime is 31124021. The reversal of 31124004 is 40042113.

It is not an unprimeable number, because it can be changed into a prime (31124003) 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, 14629 + ... + 16620.

It is an arithmetic number, because the mean of its divisors is an integer number (3062500).

Almost surely, 2^31124004 is an apocalyptic number.

It is an amenable number.

31124004 is an abundant number, since it is smaller than the sum of its proper divisors (42375996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31124004 is a wasteful number, since it uses less digits than its factorization.

31124004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31339 (or 31337 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 31124004 is about 5578.8891367368. The cubic root of 31124004 is about 314.5563722383.

Adding to 31124004 its reverse (40042113), we get a palindrome (71166117).

The spelling of 31124004 in words is "thirty-one million, one hundred twenty-four thousand, four".