231505201355041 has 4 divisors (see below), whose sum is σ = 233195020343172. Its totient is φ = 229815382366912.

The previous prime is 231505201354993. The next prime is 231505201355111. The reversal of 231505201355041 is 140553102505132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60507629182225 + 170997572172816 = 7778665^2 + 13076604^2 .

It is a cyclic number.

It is not a de Polignac number, because 231505201355041 - 2⁹ = 231505201354529 is a prime.

It is a super-2 number, since 2×231505201355041² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231505201355741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844909493860 + ... + 844909494133.

It is an arithmetic number, because the mean of its divisors is an integer number (58298755085793).

Almost surely, 2^{231505201355041} is an apocalyptic number.

It is an amenable number.

231505201355041 is a deficient number, since it is larger than the sum of its proper divisors (1689818988131).

231505201355041 is a wasteful number, since it uses less digits than its factorization.

231505201355041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689818988130.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 231505201355041 in words is "two hundred thirty-one trillion, five hundred five billion, two hundred one million, three hundred fifty-five thousand, forty-one".