231513452415481 has 2 divisors, whose sum is σ = 231513452415482. Its totient is φ = 231513452415480.

The previous prime is 231513452415467. The next prime is 231513452415541. The reversal of 231513452415481 is 184514254315132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211673866568256 + 19839585847225 = 14549016^2 + 4454165^2 .

It is a cyclic number.

It is not a de Polignac number, because 231513452415481 - 2⁷ = 231513452415353 is a prime.

It is a super-2 number, since 2×231513452415481² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231513452415181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115756726207740 + 115756726207741.

It is an arithmetic number, because the mean of its divisors is an integer number (115756726207741).

Almost surely, 2^{231513452415481} is an apocalyptic number.

It is an amenable number.

231513452415481 is a deficient number, since it is larger than the sum of its proper divisors (1).

231513452415481 is an equidigital number, since it uses as much as digits as its factorization.

231513452415481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304000, while the sum is 49.

The spelling of 231513452415481 in words is "two hundred thirty-one trillion, five hundred thirteen billion, four hundred fifty-two million, four hundred fifteen thousand, four hundred eighty-one".