1173131020 has 12 divisors (see below), whose sum is σ = 2463575184. Its totient is φ = 469252400.

The previous prime is 1173130999. The next prime is 1173131021. The reversal of 1173131020 is 201313711.

It is not an unprimeable number, because it can be changed into a prime (1173131021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29328256 + ... + 29328295.

It is an arithmetic number, because the mean of its divisors is an integer number (205297932).

Almost surely, 2^1173131020 is an apocalyptic number.

1173131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1173131020 is an abundant number, since it is smaller than the sum of its proper divisors (1290444164).

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

1173131020 is a wasteful number, since it uses less digits than its factorization.

1173131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58656560 (or 58656558 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 1173131020 is about 34251.0002773642. Note that the first 3 decimals coincide. The cubic root of 1173131020 is about 1054.6673614203.

Subtracting from 1173131020 its sum of digits (19), we obtain a square (1173131001 = 34251²).

Adding to 1173131020 its reverse (201313711), we get a palindrome (1374444731).

The spelling of 1173131020 in words is "one billion, one hundred seventy-three million, one hundred thirty-one thousand, twenty".