231945223507 has 2 divisors, whose sum is σ = 231945223508. Its totient is φ = 231945223506.

The previous prime is 231945223481. The next prime is 231945223519. The reversal of 231945223507 is 705322549132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231945223507 - 2¹⁹ = 231944699219 is a prime.

It is not a weakly prime, because it can be changed into another prime (231945223567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115972611753 + 115972611754.

It is an arithmetic number, because the mean of its divisors is an integer number (115972611754).

Almost surely, 2^231945223507 is an apocalyptic number.

231945223507 is a deficient number, since it is larger than the sum of its proper divisors (1).

231945223507 is an equidigital number, since it uses as much as digits as its factorization.

231945223507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 231945223507 in words is "two hundred thirty-one billion, nine hundred forty-five million, two hundred twenty-three thousand, five hundred seven".