31101161 has 8 divisors (see below), whose sum is σ = 38278464. Its totient is φ = 24607440.

The previous prime is 31101151. The next prime is 31101167. The reversal of 31101161 is 16110113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31101161 - 2⁶ = 31101097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31101167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170795 + ... + 170976.

It is an arithmetic number, because the mean of its divisors is an integer number (4784808).

Almost surely, 2^31101161 is an apocalyptic number.

It is an amenable number.

31101161 is a deficient number, since it is larger than the sum of its proper divisors (7177303).

31101161 is a wasteful number, since it uses less digits than its factorization.

31101161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341791.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 31101161 is about 5576.8414895889. The cubic root of 31101161 is about 314.4793987464.

Adding to 31101161 its reverse (16110113), we get a palindrome (47211274).

The spelling of 31101161 in words is "thirty-one million, one hundred one thousand, one hundred sixty-one".