31304221052252 has 24 divisors (see below), whose sum is σ = 54965821196832. Its totient is φ = 15599714054400.

The previous prime is 31304221052219. The next prime is 31304221052309. The reversal of 31304221052252 is 25225012240313.

It is a super-2 number, since 2×31304221052252² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7741808 + ... + 11069960.

It is an arithmetic number, because the mean of its divisors is an integer number (2290242549868).

Almost surely, 2^{31304221052252} is an apocalyptic number.

It is an amenable number.

31304221052252 is a deficient number, since it is larger than the sum of its proper divisors (23661600144580).

31304221052252 is a wasteful number, since it uses less digits than its factorization.

31304221052252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336029 (or 3336027 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 31304221052252 its reverse (25225012240313), we get a palindrome (56529233292565).

The spelling of 31304221052252 in words is "thirty-one trillion, three hundred four billion, two hundred twenty-one million, fifty-two thousand, two hundred fifty-two".