31225004 has 12 divisors (see below), whose sum is σ = 54700800. Its totient is φ = 15596208.

The previous prime is 31224997. The next prime is 31225031. The reversal of 31225004 is 40052213.

It is a super-3 number, since 3×31225004³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917 + ... + 7955.

It is an arithmetic number, because the mean of its divisors is an integer number (4558400).

Almost surely, 2^31225004 is an apocalyptic number.

It is an amenable number.

31225004 is a deficient number, since it is larger than the sum of its proper divisors (23475796).

31225004 is a wasteful number, since it uses less digits than its factorization.

31225004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8152 (or 8150 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 31225004 is about 5587.9337862935. The cubic root of 31225004 is about 314.8962587748.

Adding to 31225004 its reverse (40052213), we get a palindrome (71277217).

The spelling of 31225004 in words is "thirty-one million, two hundred twenty-five thousand, four".