1720131116 has 24 divisors (see below), whose sum is σ = 3307523520. Its totient is φ = 776250000.

The previous prime is 1720131113. The next prime is 1720131139. The reversal of 1720131116 is 6111310271.

It is a happy number.

It is a super-3 number, since 3×1720131116³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1720131091 and 1720131100.

It is not an unprimeable number, because it can be changed into a prime (1720131113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134510 + ... + 146741.

It is an arithmetic number, because the mean of its divisors is an integer number (137813480).

Almost surely, 2^1720131116 is an apocalyptic number.

It is an amenable number.

1720131116 is a deficient number, since it is larger than the sum of its proper divisors (1587392404).

1720131116 is a wasteful number, since it uses less digits than its factorization.

1720131116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281405 (or 281403 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1720131116 is about 41474.4634202783. The cubic root of 1720131116 is about 1198.1757271700.

Adding to 1720131116 its reverse (6111310271), we get a palindrome (7831441387).

The spelling of 1720131116 in words is "one billion, seven hundred twenty million, one hundred thirty-one thousand, one hundred sixteen".