231021060 has 48 divisors (see below), whose sum is σ = 662643072. Its totient is φ = 60102400.

The previous prime is 231021029. The next prime is 231021061. The reversal of 231021060 is 60120132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (231021061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44496 + ... + 49415.

It is an arithmetic number, because the mean of its divisors is an integer number (13805064).

Almost surely, 2^231021060 is an apocalyptic number.

231021060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231021060 is an abundant number, since it is smaller than the sum of its proper divisors (431622012).

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

231021060 is a wasteful number, since it uses less digits than its factorization.

231021060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93964 (or 93962 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231021060 is about 15199.3769609152. The cubic root of 231021060 is about 613.5978898337.

Adding to 231021060 its reverse (60120132), we get a palindrome (291141192).

The spelling of 231021060 in words is "two hundred thirty-one million, twenty-one thousand, sixty".