231566134337049 has 32 divisors (see below), whose sum is σ = 322303174502400. Its totient is φ = 147608442292608.

The previous prime is 231566134337011. The next prime is 231566134337051. The reversal of 231566134337049 is 940733431665132.

It is a happy number.

It is not a de Polignac number, because 231566134337049 - 2¹³ = 231566134328857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231566134337049.

It is not an unprimeable number, because it can be changed into a prime (231566134339049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2827418902 + ... + 2827500800.

It is an arithmetic number, because the mean of its divisors is an integer number (10071974203200).

Almost surely, 2^{231566134337049} is an apocalyptic number.

It is an amenable number.

231566134337049 is a deficient number, since it is larger than the sum of its proper divisors (90737040165351).

231566134337049 is a wasteful number, since it uses less digits than its factorization.

231566134337049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97221.

The product of its (nonzero) digits is 29393280, while the sum is 57.

The spelling of 231566134337049 in words is "two hundred thirty-one trillion, five hundred sixty-six billion, one hundred thirty-four million, three hundred thirty-seven thousand, forty-nine".