231131545145111 has 8 divisors (see below), whose sum is σ = 254699520232080. Its totient is φ = 208390516552512.

The previous prime is 231131545145101. The next prime is 231131545145131. The reversal of 231131545145111 is 111541545131132.

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

It is a cyclic number.

It is not a de Polignac number, because 231131545145111 - 2⁶ = 231131545145047 is a prime.

It is a super-2 number, since 2×231131545145111² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231131545145101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206736623006 + ... + 206736624123.

It is an arithmetic number, because the mean of its divisors is an integer number (31837440029010).

Almost surely, 2^{231131545145111} is an apocalyptic number.

231131545145111 is a deficient number, since it is larger than the sum of its proper divisors (23567975086969).

231131545145111 is a wasteful number, since it uses less digits than its factorization.

231131545145111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413473247185.

The product of its digits is 36000, while the sum is 38.

The spelling of 231131545145111 in words is "two hundred thirty-one trillion, one hundred thirty-one billion, five hundred forty-five million, one hundred forty-five thousand, one hundred eleven".