3161111 has 4 divisors (see below), whose sum is σ = 3174912. Its totient is φ = 3147312.

The previous prime is 3161107. The next prime is 3161129. The reversal of 3161111 is 1111613.

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 3161111 - 2² = 3161107 is a prime.

It is a Duffinian number.

3161111 is a modest number, since divided by 1111 gives 316 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161131) 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, 6551 + ... + 7016.

It is an arithmetic number, because the mean of its divisors is an integer number (793728).

Almost surely, 2^3161111 is an apocalyptic number.

3161111 is a deficient number, since it is larger than the sum of its proper divisors (13801).

3161111 is a wasteful number, since it uses less digits than its factorization.

3161111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13800.

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

The square root of 3161111 is about 1777.9513491657. The cubic root of 3161111 is about 146.7618740193.

Adding to 3161111 its reverse (1111613), we get a palindrome (4272724).

The spelling of 3161111 in words is "three million, one hundred sixty-one thousand, one hundred eleven".