7161131232 has 72 divisors (see below), whose sum is σ = 20381437440. Its totient is φ = 2385054720.

The previous prime is 7161131227. The next prime is 7161131233. The reversal of 7161131232 is 2321311617.

7161131232 is a `hidden beast` number, since 7 + 1 + 611 + 3 + 12 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 7161131196 and 7161131205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7161131233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358632 + ... + 378072.

It is an arithmetic number, because the mean of its divisors is an integer number (283075520).

Almost surely, 2^7161131232 is an apocalyptic number.

7161131232 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7161131232 is an abundant number, since it is smaller than the sum of its proper divisors (13220306208).

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

7161131232 is a wasteful number, since it uses less digits than its factorization.

7161131232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20736 (or 20725 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 7161131232 is about 84623.4673834628. The cubic root of 7161131232 is about 1927.4977399581.

Adding to 7161131232 its reverse (2321311617), we get a palindrome (9482442849).

The spelling of 7161131232 in words is "seven billion, one hundred sixty-one million, one hundred thirty-one thousand, two hundred thirty-two".