31344916 has 6 divisors (see below), whose sum is σ = 54853610. Its totient is φ = 15672456.

The previous prime is 31344913. The next prime is 31344931. The reversal of 31344916 is 61944313.

It can be written as a sum of positive squares in only one way, i.e., 26522500 + 4822416 = 5150^2 + 2196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3918111 + ... + 3918118.

Almost surely, 2^31344916 is an apocalyptic number.

It is an amenable number.

31344916 is a deficient number, since it is larger than the sum of its proper divisors (23508694).

31344916 is a wasteful number, since it uses less digits than its factorization.

31344916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836233 (or 7836231 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 31344916 is about 5598.6530522975. The cubic root of 31344916 is about 315.2988379304.

The spelling of 31344916 in words is "thirty-one million, three hundred forty-four thousand, nine hundred sixteen".