31203020121032 has 16 divisors (see below), whose sum is σ = 60086896855260. Its totient is φ = 15179847626304.

The previous prime is 31203020121023. The next prime is 31203020121079. The reversal of 31203020121032 is 23012102030213.

It can be written as a sum of positive squares in 2 ways, for example, as 25070790041476 + 6132230079556 = 5007074^2 + 2476334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31203020120995 and 31203020121013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52707803963 + ... + 52707804554.

Almost surely, 2^{31203020121032} is an apocalyptic number.

It is an amenable number.

31203020121032 is a deficient number, since it is larger than the sum of its proper divisors (28883876734228).

31203020121032 is a wasteful number, since it uses less digits than its factorization.

31203020121032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105415608560 (or 105415608556 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31203020121032 its reverse (23012102030213), we get a palindrome (54215122151245).

The spelling of 31203020121032 in words is "thirty-one trillion, two hundred three billion, twenty million, one hundred twenty-one thousand, thirty-two".