231120016 has 10 divisors (see below), whose sum is σ = 447795062. Its totient is φ = 115560000.

The previous prime is 231120013. The next prime is 231120023. The reversal of 231120016 is 610021132.

It can be written as a sum of positive squares in only one way, i.e., 201526416 + 29593600 = 14196^2 + 5440^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 14445001 = 231120016 / (2 + 3 + 1 + 1 + 2 + 0 + 0 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (231120013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7222485 + ... + 7222516.

Almost surely, 2^231120016 is an apocalyptic number.

It is an amenable number.

231120016 is a deficient number, since it is larger than the sum of its proper divisors (216675046).

231120016 is a wasteful number, since it uses less digits than its factorization.

231120016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14445009 (or 14445003 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 231120016 is about 15202.6318774086. The cubic root of 231120016 is about 613.6854872232.

Adding to 231120016 its reverse (610021132), we get a palindrome (841141148).

The spelling of 231120016 in words is "two hundred thirty-one million, one hundred twenty thousand, sixteen".