231015122 has 8 divisors (see below), whose sum is σ = 373178316. Its totient is φ = 106622352.

The previous prime is 231015121. The next prime is 231015157. The reversal of 231015122 is 221510132.

It is a happy number.

231015122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 167159041 + 63856081 = 12929^2 + 7991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 231015122.

It is not an unprimeable number, because it can be changed into a prime (231015121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442573 + ... + 4442624.

Almost surely, 2^231015122 is an apocalyptic number.

231015122 is a deficient number, since it is larger than the sum of its proper divisors (142163194).

231015122 is a wasteful number, since it uses less digits than its factorization.

231015122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8885212.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 231015122 is about 15199.1816227059. The cubic root of 231015122 is about 613.5926326283.

Adding to 231015122 its reverse (221510132), we get a palindrome (452525254).

The spelling of 231015122 in words is "two hundred thirty-one million, fifteen thousand, one hundred twenty-two".