231545052073 has 2 divisors, whose sum is σ = 231545052074. Its totient is φ = 231545052072.

The previous prime is 231545052059. The next prime is 231545052113. The reversal of 231545052073 is 370250545132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209276056089 + 22268995984 = 457467^2 + 149228^2 .

It is a cyclic number.

It is not a de Polignac number, because 231545052073 - 2²¹ = 231542954921 is a prime.

It is a super-2 number, since 2×231545052073² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231545052173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115772526036 + 115772526037.

It is an arithmetic number, because the mean of its divisors is an integer number (115772526037).

Almost surely, 2^231545052073 is an apocalyptic number.

It is an amenable number.

231545052073 is a deficient number, since it is larger than the sum of its proper divisors (1).

231545052073 is an equidigital number, since it uses as much as digits as its factorization.

231545052073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 231545052073 in words is "two hundred thirty-one billion, five hundred forty-five million, fifty-two thousand, seventy-three".