1170331220 has 48 divisors (see below), whose sum is σ = 2670528000. Its totient is φ = 429183360.

The previous prime is 1170331219. The next prime is 1170331231. The reversal of 1170331220 is 221330711.

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 = 1170331192 and 1170331201.

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, 37895 + ... + 61454.

It is an arithmetic number, because the mean of its divisors is an integer number (55636000).

Almost surely, 2^1170331220 is an apocalyptic number.

1170331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1170331220 is an abundant number, since it is smaller than the sum of its proper divisors (1500196780).

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

1170331220 is a wasteful number, since it uses less digits than its factorization.

1170331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99408 (or 99406 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1170331220 is about 34210.1040629812. The cubic root of 1170331220 is about 1053.8276683684.

Adding to 1170331220 its reverse (221330711), we get a palindrome (1391661931).

The spelling of 1170331220 in words is "one billion, one hundred seventy million, three hundred thirty-one thousand, two hundred twenty".