31941072 has 30 divisors (see below), whose sum is σ = 89391042. Its totient is φ = 10646976.

The previous prime is 31941047. The next prime is 31941073. The reversal of 31941072 is 27014913.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 6780816 = 5016^2 + 2604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31941073) 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 5 ways as a sum of consecutive naturals, for example, 110763 + ... + 111050.

Almost surely, 2^31941072 is an apocalyptic number.

It is an amenable number.

31941072 is an abundant number, since it is smaller than the sum of its proper divisors (57449970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31941072 is a wasteful number, since it uses less digits than its factorization.

31941072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221827 (or 221818 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 31941072 is about 5651.6433008462. The cubic root of 31941072 is about 317.2852107115.

Adding to 31941072 its reverse (27014913), we get a palindrome (58955985).

The spelling of 31941072 in words is "thirty-one million, nine hundred forty-one thousand, seventy-two".