231965893147 has 2 divisors, whose sum is σ = 231965893148. Its totient is φ = 231965893146.

The previous prime is 231965893127. The next prime is 231965893153. The reversal of 231965893147 is 741398569132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231965893147 - 2²⁷ = 231831675419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231965893091 and 231965893100.

It is not a weakly prime, because it can be changed into another prime (231965893127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115982946573 + 115982946574.

It is an arithmetic number, because the mean of its divisors is an integer number (115982946574).

Almost surely, 2^231965893147 is an apocalyptic number.

231965893147 is a deficient number, since it is larger than the sum of its proper divisors (1).

231965893147 is an equidigital number, since it uses as much as digits as its factorization.

231965893147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 58.

The spelling of 231965893147 in words is "two hundred thirty-one billion, nine hundred sixty-five million, eight hundred ninety-three thousand, one hundred forty-seven".