31334161 has 4 divisors (see below), whose sum is σ = 31541824. Its totient is φ = 31126500.

The previous prime is 31334159. The next prime is 31334167. The reversal of 31334161 is 16143313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31334161 - 2¹ = 31334159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31334167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103605 + ... + 103906.

It is an arithmetic number, because the mean of its divisors is an integer number (7885456).

Almost surely, 2^31334161 is an apocalyptic number.

It is an amenable number.

31334161 is a deficient number, since it is larger than the sum of its proper divisors (207663).

31334161 is a wasteful number, since it uses less digits than its factorization.

31334161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207662.

The product of its digits is 648, while the sum is 22.

The square root of 31334161 is about 5597.6924710098. The cubic root of 31334161 is about 315.2627722527.

Adding to 31334161 its reverse (16143313), we get a palindrome (47477474).

The spelling of 31334161 in words is "thirty-one million, three hundred thirty-four thousand, one hundred sixty-one".