1150311220 has 24 divisors (see below), whose sum is σ = 2439575208. Its totient is φ = 455568000.

The previous prime is 1150311209. The next prime is 1150311233. The reversal of 1150311220 is 221130511.

It can be written as a sum of positive squares in 4 ways, for example, as 374577316 + 775733904 = 19354^2 + 27852^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1150311194 and 1150311203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282711 + ... + 286750.

It is an arithmetic number, because the mean of its divisors is an integer number (101648967).

Almost surely, 2^1150311220 is an apocalyptic number.

1150311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1150311220 is an abundant number, since it is smaller than the sum of its proper divisors (1289263988).

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

1150311220 is a wasteful number, since it uses less digits than its factorization.

1150311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569571 (or 569569 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1150311220 is about 33916.2382937731. The cubic root of 1150311220 is about 1047.7840553553.

Adding to 1150311220 its reverse (221130511), we get a palindrome (1371441731).

The spelling of 1150311220 in words is "one billion, one hundred fifty million, three hundred eleven thousand, two hundred twenty".