3161998 has 16 divisors (see below), whose sum is σ = 5503104. Its totient is φ = 1334520.

The previous prime is 3161993. The next prime is 3162001. The reversal of 3161998 is 8991613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748 + ... + 2623.

It is an arithmetic number, because the mean of its divisors is an integer number (343944).

Almost surely, 2^3161998 is an apocalyptic number.

3161998 is a deficient number, since it is larger than the sum of its proper divisors (2341106).

3161998 is a wasteful number, since it uses less digits than its factorization.

3161998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447.

The product of its digits is 11664, while the sum is 37.

The square root of 3161998 is about 1778.2007760655. The cubic root of 3161998 is about 146.7755997429.

The spelling of 3161998 in words is "three million, one hundred sixty-one thousand, nine hundred ninety-eight".