231506146273 has 2 divisors, whose sum is σ = 231506146274. Its totient is φ = 231506146272.

The previous prime is 231506146243. The next prime is 231506146303. The reversal of 231506146273 is 372641605132.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (231506146243) and next prime (231506146303).

It can be written as a sum of positive squares in only one way, i.e., 229816689664 + 1689456609 = 479392^2 + 41103^2 .

It is a cyclic number.

It is not a de Polignac number, because 231506146273 - 2²⁵ = 231472591841 is a prime.

It is not a weakly prime, because it can be changed into another prime (231506146243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115753073136 + 115753073137.

It is an arithmetic number, because the mean of its divisors is an integer number (115753073137).

Almost surely, 2^231506146273 is an apocalyptic number.

It is an amenable number.

231506146273 is a deficient number, since it is larger than the sum of its proper divisors (1).

231506146273 is an equidigital number, since it uses as much as digits as its factorization.

231506146273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 231506146273 in words is "two hundred thirty-one billion, five hundred six million, one hundred forty-six thousand, two hundred seventy-three".