31306052 has 6 divisors (see below), whose sum is σ = 54785598. Its totient is φ = 15653024.

The previous prime is 31306043. The next prime is 31306057. The reversal of 31306052 is 25060313.

It can be written as a sum of positive squares in only one way, i.e., 30294016 + 1012036 = 5504^2 + 1006^2 .

It is not an unprimeable number, because it can be changed into a prime (31306057) 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 as a sum of consecutive naturals, namely, 3913253 + ... + 3913260.

It is an arithmetic number, because the mean of its divisors is an integer number (9130933).

Almost surely, 2^31306052 is an apocalyptic number.

It is an amenable number.

31306052 is a deficient number, since it is larger than the sum of its proper divisors (23479546).

31306052 is a wasteful number, since it uses less digits than its factorization.

31306052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826517 (or 7826515 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 31306052 is about 5595.1811409462. The cubic root of 31306052 is about 315.1684729089.

Adding to 31306052 its reverse (25060313), we get a palindrome (56366365).

The spelling of 31306052 in words is "thirty-one million, three hundred six thousand, fifty-two".