461261531 has 2 divisors, whose sum is σ = 461261532. Its totient is φ = 461261530.

The previous prime is 461261497. The next prime is 461261533. The reversal of 461261531 is 135162164.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 461261531 - 2⁶ = 461261467 is a prime.

It is a super-2 number, since 2×461261531² = 425524399960927922, which contains 22 as substring.

Together with 461261533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 461261494 and 461261503.

It is not a weakly prime, because it can be changed into another prime (461261533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230630765 + 230630766.

It is an arithmetic number, because the mean of its divisors is an integer number (230630766).

Almost surely, 2^461261531 is an apocalyptic number.

461261531 is a deficient number, since it is larger than the sum of its proper divisors (1).

461261531 is an equidigital number, since it uses as much as digits as its factorization.

461261531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 461261531 is about 21477.0000465614. Note that the first 4 decimals coincide. The cubic root of 461261531 is about 772.6492939078.

The spelling of 461261531 in words is "four hundred sixty-one million, two hundred sixty-one thousand, five hundred thirty-one".