485761631 has 2 divisors, whose sum is σ = 485761632. Its totient is φ = 485761630.

The previous prime is 485761597. The next prime is 485761643. The reversal of 485761631 is 136167584.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-485761631 is a prime.

It is a super-2 number, since 2×485761631² = 471928724303560322, which contains 22 as substring.

It is equal to p_25644497 and since 485761631 and 25644497 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (485761681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242880815 + 242880816.

It is an arithmetic number, because the mean of its divisors is an integer number (242880816).

Almost surely, 2^485761631 is an apocalyptic number.

485761631 is a deficient number, since it is larger than the sum of its proper divisors (1).

485761631 is an equidigital number, since it uses as much as digits as its factorization.

485761631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 485761631 is about 22040.0007032668. Note that the first 3 decimals coincide. The cubic root of 485761631 is about 786.0938574260.

The spelling of 485761631 in words is "four hundred eighty-five million, seven hundred sixty-one thousand, six hundred thirty-one".