31020130204 has 24 divisors (see below), whose sum is σ = 62825584640. Its totient is φ = 13126057776.

The previous prime is 31020130201. The next prime is 31020130223. The reversal of 31020130204 is 40203102013.

It is a happy number.

It is a super-2 number, since 2×31020130204² (a number of 22 digits) contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020130201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7009572 + ... + 7013995.

Almost surely, 2^31020130204 is an apocalyptic number.

It is an amenable number.

31020130204 is an abundant number, since it is smaller than the sum of its proper divisors (31805454436).

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

31020130204 is a wasteful number, since it uses less digits than its factorization.

31020130204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14023657 (or 14023655 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31020130204 its reverse (40203102013), we get a palindrome (71223232217).

The spelling of 31020130204 in words is "thirty-one billion, twenty million, one hundred thirty thousand, two hundred four".