31020202030 has 48 divisors (see below), whose sum is σ = 57241023840. Its totient is φ = 12102412608.

The previous prime is 31020202007. The next prime is 31020202033. The reversal of 31020202030 is 3020202013.

It is a happy number.

It is a super-4 number, since 4×31020202030⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 31020202030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020202033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4620316 + ... + 4627024.

It is an arithmetic number, because the mean of its divisors is an integer number (1192521330).

Almost surely, 2^31020202030 is an apocalyptic number.

31020202030 is a deficient number, since it is larger than the sum of its proper divisors (26220821810).

31020202030 is a wasteful number, since it uses less digits than its factorization.

31020202030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6953 (or 6886 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 31020202030 its reverse (3020202013), we get a palindrome (34040404043).

The spelling of 31020202030 in words is "thirty-one billion, twenty million, two hundred two thousand, thirty".