31302002201020 has 48 divisors (see below), whose sum is σ = 65779785465408. Its totient is φ = 12512121753600.

The previous prime is 31302002201017. The next prime is 31302002201069. The reversal of 31302002201020 is 2010220020313.

It is a junction number, because it is equal to n+sod(n) for n = 31302002200985 and 31302002201003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176160220 + ... + 176337820.

It is an arithmetic number, because the mean of its divisors is an integer number (1370412197196).

Almost surely, 2^{31302002201020} is an apocalyptic number.

It is an amenable number.

31302002201020 is an abundant number, since it is smaller than the sum of its proper divisors (34477783264388).

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

31302002201020 is a wasteful number, since it uses less digits than its factorization.

31302002201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183670 (or 183668 counting only the distinct ones).

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

Adding to 31302002201020 its reverse (2010220020313), we get a palindrome (33312222221333).

The spelling of 31302002201020 in words is "thirty-one trillion, three hundred two billion, two million, two hundred one thousand, twenty".