31411332220 has 48 divisors (see below), whose sum is σ = 66189584160. Its totient is φ = 12521594624.

The previous prime is 31411332193. The next prime is 31411332221. The reversal of 31411332220 is 2223311413.

It is a junction number, because it is equal to n+sod(n) for n = 31411332191 and 31411332200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31411332221) 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, 15728262 + ... + 15730258.

It is an arithmetic number, because the mean of its divisors is an integer number (1378949670).

Almost surely, 2^31411332220 is an apocalyptic number.

It is an amenable number.

31411332220 is an abundant number, since it is smaller than the sum of its proper divisors (34778251940).

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

31411332220 is a wasteful number, since it uses less digits than its factorization.

31411332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31411332220 its reverse (2223311413), we get a palindrome (33634643633).

The spelling of 31411332220 in words is "thirty-one billion, four hundred eleven million, three hundred thirty-two thousand, two hundred twenty".