271231220 has 48 divisors (see below), whose sum is σ = 614718720. Its totient is φ = 99931776.

The previous prime is 271231211. The next prime is 271231231. The reversal of 271231220 is 22132172.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 271231192 and 271231201.

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, 170549 + ... + 172131.

It is an arithmetic number, because the mean of its divisors is an integer number (12806640).

Almost surely, 2^271231220 is an apocalyptic number.

271231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271231220 is an abundant number, since it is smaller than the sum of its proper divisors (343487500).

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

271231220 is a wasteful number, since it uses less digits than its factorization.

271231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 271231220 is about 16469.0989431723. The cubic root of 271231220 is about 647.3113556284.

Adding to 271231220 its reverse (22132172), we get a palindrome (293363392).

The spelling of 271231220 in words is "two hundred seventy-one million, two hundred thirty-one thousand, two hundred twenty".