31034201220 has 96 divisors (see below), whose sum is σ = 105328218240. Its totient is φ = 7523441280.

The previous prime is 31034201213. The next prime is 31034201221. The reversal of 31034201220 is 2210243013.

31034201220 is a `hidden beast` number, since 310 + 342 + 0 + 12 + 2 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 31034201193 and 31034201202.

It is not an unprimeable number, because it can be changed into a prime (31034201221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2606367 + ... + 2618246.

It is an arithmetic number, because the mean of its divisors is an integer number (1097168940).

Almost surely, 2^31034201220 is an apocalyptic number.

31034201220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31034201220 is an abundant number, since it is smaller than the sum of its proper divisors (74294017020).

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

31034201220 is a wasteful number, since it uses less digits than its factorization.

31034201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224642 (or 5224634 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31034201220 its reverse (2210243013), we get a palindrome (33244444233).

The spelling of 31034201220 in words is "thirty-one billion, thirty-four million, two hundred one thousand, two hundred twenty".