31820630522428 has 12 divisors (see below), whose sum is σ = 60748476451992. Its totient is φ = 14463922964720.

The previous prime is 31820630522423. The next prime is 31820630522467. The reversal of 31820630522428 is 82422503602813.

It is a super-2 number, since 2×31820630522428² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31820630522423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361598074075 + ... + 361598074162.

It is an arithmetic number, because the mean of its divisors is an integer number (5062373037666).

Almost surely, 2^{31820630522428} is an apocalyptic number.

It is an amenable number.

31820630522428 is a deficient number, since it is larger than the sum of its proper divisors (28927845929564).

31820630522428 is a wasteful number, since it uses less digits than its factorization.

31820630522428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723196148252 (or 723196148250 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 31820630522428 in words is "thirty-one trillion, eight hundred twenty billion, six hundred thirty million, five hundred twenty-two thousand, four hundred twenty-eight".