31020212300 has 72 divisors (see below), whose sum is σ = 83923795200. Its totient is φ = 9668635200.

The previous prime is 31020212287. The next prime is 31020212317. The reversal of 31020212300 is 321202013.

It is a happy number.

It is a super-2 number, since 2×31020212300² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2006600 + ... + 2021999.

Almost surely, 2^31020212300 is an apocalyptic number.

It is an amenable number.

31020212300 is an abundant number, since it is smaller than the sum of its proper divisors (52903582900).

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

31020212300 is a wasteful number, since it uses less digits than its factorization.

31020212300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4028631 (or 4028624 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31020212300 its reverse (321202013), we get a palindrome (31341414313).

The spelling of 31020212300 in words is "thirty-one billion, twenty million, two hundred twelve thousand, three hundred".