31974941 has 8 divisors (see below), whose sum is σ = 32475960. Its totient is φ = 31477248.

The previous prime is 31974913. The next prime is 31974947. The reversal of 31974941 is 14947913.

It can be written as a sum of positive squares in 4 ways, for example, as 5152900 + 26822041 = 2270^2 + 5179^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31974941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31974895 and 31974904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31974947) 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, 24005 + ... + 25301.

It is an arithmetic number, because the mean of its divisors is an integer number (4059495).

Almost surely, 2^31974941 is an apocalyptic number.

It is an amenable number.

31974941 is a deficient number, since it is larger than the sum of its proper divisors (501019).

31974941 is a wasteful number, since it uses less digits than its factorization.

31974941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663.

The product of its digits is 27216, while the sum is 38.

The square root of 31974941 is about 5654.6388920956. The cubic root of 31974941 is about 317.3973164958.

The spelling of 31974941 in words is "thirty-one million, nine hundred seventy-four thousand, nine hundred forty-one".