116531320 has 32 divisors (see below), whose sum is σ = 265521600. Its totient is φ = 46021248.

The previous prime is 116531297. The next prime is 116531323. The reversal of 116531320 is 23135611.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 116531291 and 116531300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116531323) 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, 15279 + ... + 21598.

It is an arithmetic number, because the mean of its divisors is an integer number (8297550).

Almost surely, 2^116531320 is an apocalyptic number.

116531320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116531320 is an abundant number, since it is smaller than the sum of its proper divisors (148990280).

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

116531320 is a wasteful number, since it uses less digits than its factorization.

116531320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36967 (or 36963 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 116531320 is about 10794.9673459441. The cubic root of 116531320 is about 488.4433733649.

Adding to 116531320 its reverse (23135611), we get a palindrome (139666931).

The spelling of 116531320 in words is "one hundred sixteen million, five hundred thirty-one thousand, three hundred twenty".