231081150473 has 2 divisors, whose sum is σ = 231081150474. Its totient is φ = 231081150472.

The previous prime is 231081150437. The next prime is 231081150493. The reversal of 231081150473 is 374051180132.

Together with previous prime (231081150437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146962589449 + 84118561024 = 383357^2 + 290032^2 .

It is a cyclic number.

It is not a de Polignac number, because 231081150473 - 2⁸ = 231081150217 is a prime.

It is not a weakly prime, because it can be changed into another prime (231081150493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115540575236 + 115540575237.

It is an arithmetic number, because the mean of its divisors is an integer number (115540575237).

Almost surely, 2^231081150473 is an apocalyptic number.

It is an amenable number.

231081150473 is a deficient number, since it is larger than the sum of its proper divisors (1).

231081150473 is an equidigital number, since it uses as much as digits as its factorization.

231081150473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 231081150473 in words is "two hundred thirty-one billion, eighty-one million, one hundred fifty thousand, four hundred seventy-three".