31316552 has 8 divisors (see below), whose sum is σ = 58718550. Its totient is φ = 15658272.

The previous prime is 31316543. The next prime is 31316557. The reversal of 31316552 is 25561313.

It can be written as a sum of positive squares in only one way, i.e., 31292836 + 23716 = 5594^2 + 154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (31316557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957277 + ... + 1957292.

Almost surely, 2^31316552 is an apocalyptic number.

It is an amenable number.

31316552 is a deficient number, since it is larger than the sum of its proper divisors (27401998).

31316552 is a wasteful number, since it uses less digits than its factorization.

31316552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914575 (or 3914571 counting only the distinct ones).

The product of its digits is 2700, while the sum is 26.

The square root of 31316552 is about 5596.1193697061. The cubic root of 31316552 is about 315.2037046384.

Adding to 31316552 its reverse (25561313), we get a palindrome (56877865).

The spelling of 31316552 in words is "thirty-one million, three hundred sixteen thousand, five hundred fifty-two".