161832631 has 2 divisors, whose sum is σ = 161832632. Its totient is φ = 161832630.

The previous prime is 161832563. The next prime is 161832637. The reversal of 161832631 is 136238161.

It is a strong prime.

It is an emirp because it is prime and its reverse (136238161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161832631 - 2⁹ = 161832119 is a prime.

It is a super-2 number, since 2×161832631² = 52379600912764322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161832593 and 161832602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161832637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80916315 + 80916316.

It is an arithmetic number, because the mean of its divisors is an integer number (80916316).

Almost surely, 2^161832631 is an apocalyptic number.

161832631 is a deficient number, since it is larger than the sum of its proper divisors (1).

161832631 is an equidigital number, since it uses as much as digits as its factorization.

161832631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 161832631 is about 12721.3454870151. The cubic root of 161832631 is about 544.9483788046.

The spelling of 161832631 in words is "one hundred sixty-one million, eight hundred thirty-two thousand, six hundred thirty-one".