231379110145 has 16 divisors (see below), whose sum is σ = 287243994960. Its totient is φ = 178711235584.

The previous prime is 231379110143. The next prime is 231379110167. The reversal of 231379110145 is 541011973132.

It can be written as a sum of positive squares in 8 ways, for example, as 7717271104 + 223661839041 = 87848^2 + 472929^2 .

It is a cyclic number.

It is not a de Polignac number, because 231379110145 - 2¹ = 231379110143 is a prime.

It is a super-2 number, since 2×231379110145² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231379110143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4588389 + ... + 4638541.

It is an arithmetic number, because the mean of its divisors is an integer number (17952749685).

Almost surely, 2^231379110145 is an apocalyptic number.

It is an amenable number.

231379110145 is a deficient number, since it is larger than the sum of its proper divisors (55864884815).

231379110145 is a wasteful number, since it uses less digits than its factorization.

231379110145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82004.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 231379110145 in words is "two hundred thirty-one billion, three hundred seventy-nine million, one hundred ten thousand, one hundred forty-five".