31330004 has 12 divisors (see below), whose sum is σ = 55646304. Its totient is φ = 15431064.

The previous prime is 31329989. The next prime is 31330007. The reversal of 31330004 is 40003313.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58184 + ... + 58719.

It is an arithmetic number, because the mean of its divisors is an integer number (4637192).

Almost surely, 2^31330004 is an apocalyptic number.

It is an amenable number.

31330004 is a deficient number, since it is larger than the sum of its proper divisors (24316300).

31330004 is a wasteful number, since it uses less digits than its factorization.

31330004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116974 (or 116972 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 31330004 is about 5597.3211449764. The cubic root of 31330004 is about 315.2488300113.

Adding to 31330004 its reverse (40003313), we get a palindrome (71333317).

The spelling of 31330004 in words is "thirty-one million, three hundred thirty thousand, four".