231543345001 has 4 divisors (see below), whose sum is σ = 235339137604. Its totient is φ = 227747552400.

The previous prime is 231543344987. The next prime is 231543345029. The reversal of 231543345001 is 100543345132.

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 136570898025 + 94972446976 = 369555^2 + 308176^2 .

It is a cyclic number.

It is not a de Polignac number, because 231543345001 - 2⁹ = 231543344489 is a prime.

It is a super-2 number, since 2×231543345001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231543345031) 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, 1897896210 + ... + 1897896331.

It is an arithmetic number, because the mean of its divisors is an integer number (58834784401).

Almost surely, 2^231543345001 is an apocalyptic number.

It is an amenable number.

231543345001 is a deficient number, since it is larger than the sum of its proper divisors (3795792603).

231543345001 is an equidigital number, since it uses as much as digits as its factorization.

231543345001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795792602.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 231543345001 in words is "two hundred thirty-one billion, five hundred forty-three million, three hundred forty-five thousand, one".