31301011000220 has 48 divisors (see below), whose sum is σ = 71844984186528. Its totient is φ = 11384799402240.

The previous prime is 31301011000169. The next prime is 31301011000223. The reversal of 31301011000220 is 2200011010313.

It is a junction number, because it is equal to n+sod(n) for n = 31301011000195 and 31301011000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301011000223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 898404251 + ... + 898439090.

It is an arithmetic number, because the mean of its divisors is an integer number (1496770503886).

Almost surely, 2^{31301011000220} is an apocalyptic number.

It is an amenable number.

31301011000220 is an abundant number, since it is smaller than the sum of its proper divisors (40543973186308).

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

31301011000220 is a wasteful number, since it uses less digits than its factorization.

31301011000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796843430 (or 1796843428 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31301011000220 its reverse (2200011010313), we get a palindrome (33501022010533).

The spelling of 31301011000220 in words is "thirty-one trillion, three hundred one billion, eleven million, two hundred twenty", and thus it is an aban number.