231315105 has 32 divisors (see below), whose sum is σ = 430156800. Its totient is φ = 103948992.

The previous prime is 231315023. The next prime is 231315121. The reversal of 231315105 is 501513132.

231315105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231315105 - 2⁹ = 231314593 is a prime.

It is a super-2 number, since 2×231315105² = 107013355602322050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12475 + ... + 24864.

It is an arithmetic number, because the mean of its divisors is an integer number (13442400).

Almost surely, 2^231315105 is an apocalyptic number.

It is an amenable number.

231315105 is a deficient number, since it is larger than the sum of its proper divisors (198841695).

231315105 is a wasteful number, since it uses less digits than its factorization.

231315105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37413.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 231315105 is about 15209.0468143142. The cubic root of 231315105 is about 613.8581098280.

Adding to 231315105 its reverse (501513132), we get a palindrome (732828237).

The spelling of 231315105 in words is "two hundred thirty-one million, three hundred fifteen thousand, one hundred five".