31948161 has 16 divisors (see below), whose sum is σ = 48780288. Its totient is φ = 18219600.

The previous prime is 31948159. The next prime is 31948193. The reversal of 31948161 is 16184913.

It is not a de Polignac number, because 31948161 - 2¹ = 31948159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31948121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12046 + ... + 14456.

It is an arithmetic number, because the mean of its divisors is an integer number (3048768).

Almost surely, 2^31948161 is an apocalyptic number.

It is an amenable number.

31948161 is a deficient number, since it is larger than the sum of its proper divisors (16832127).

31948161 is a wasteful number, since it uses less digits than its factorization.

31948161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052.

The product of its digits is 5184, while the sum is 33.

The square root of 31948161 is about 5652.2704287746. The cubic root of 31948161 is about 317.3086817301.

The spelling of 31948161 in words is "thirty-one million, nine hundred forty-eight thousand, one hundred sixty-one".