31301022221010 has 48 divisors (see below), whose sum is σ = 81382944838104. Its totient is φ = 8346909816576.

The previous prime is 31301022220991. The next prime is 31301022221039. The reversal of 31301022221010 is 1012222010313.

It can be written as a sum of positive squares in 4 ways, for example, as 14637212391321 + 16663809829689 = 3825861^2 + 4082133^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39633144 + ... + 40415196.

Almost surely, 2^{31301022221010} is an apocalyptic number.

31301022221010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31301022221010 is an abundant number, since it is smaller than the sum of its proper divisors (50081922617094).

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

31301022221010 is a wasteful number, since it uses less digits than its factorization.

31301022221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226779 (or 1226776 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31301022221010 its reverse (1012222010313), we get a palindrome (32313244231323).

The spelling of 31301022221010 in words is "thirty-one trillion, three hundred one billion, twenty-two million, two hundred twenty-one thousand, ten".