161832831 has 4 divisors (see below), whose sum is σ = 215777112. Its totient is φ = 107888552.

The previous prime is 161832793. The next prime is 161832833. The reversal of 161832831 is 138238161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161832831 - 2⁶ = 161832767 is a prime.

It is a super-2 number, since 2×161832831² = 52379730378949122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161832792 and 161832801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161832833) 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 in 3 ways as a sum of consecutive naturals, for example, 26972136 + ... + 26972141.

It is an arithmetic number, because the mean of its divisors is an integer number (53944278).

Almost surely, 2^161832831 is an apocalyptic number.

161832831 is a deficient number, since it is larger than the sum of its proper divisors (53944281).

161832831 is an equidigital number, since it uses as much as digits as its factorization.

161832831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53944280.

The product of its digits is 6912, while the sum is 33.

The square root of 161832831 is about 12721.3533478164. The cubic root of 161832831 is about 544.9486032950.

The spelling of 161832831 in words is "one hundred sixty-one million, eight hundred thirty-two thousand, eight hundred thirty-one".