31203001012 has 12 divisors (see below), whose sum is σ = 54791619876. Its totient is φ = 15548252480.

The previous prime is 31203001003. The next prime is 31203001043. The reversal of 31203001012 is 21010030213.

It can be written as a sum of positive squares in 2 ways, for example, as 16456784656 + 14746216356 = 128284^2 + 121434^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31203000983 and 31203001001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13310689 + ... + 13313032.

It is an arithmetic number, because the mean of its divisors is an integer number (4565968323).

Almost surely, 2^31203001012 is an apocalyptic number.

It is an amenable number.

31203001012 is a deficient number, since it is larger than the sum of its proper divisors (23588618864).

31203001012 is a wasteful number, since it uses less digits than its factorization.

31203001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26624018 (or 26624016 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31203001012 its reverse (21010030213), we get a palindrome (52213031225).

The spelling of 31203001012 in words is "thirty-one billion, two hundred three million, one thousand, twelve".