31033203131212 has 12 divisors (see below), whose sum is σ = 54312707554056. Its totient is φ = 15515286687200.

The previous prime is 31033203131137. The next prime is 31033203131251. The reversal of 31033203131212 is 21213130233013.

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, 328666498 + ... + 328760905.

It is an arithmetic number, because the mean of its divisors is an integer number (4526058962838).

Almost surely, 2^{31033203131212} is an apocalyptic number.

It is an amenable number.

31033203131212 is a deficient number, since it is larger than the sum of its proper divisors (23279504422844).

31033203131212 is a wasteful number, since it uses less digits than its factorization.

31033203131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657439208 (or 657439206 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31033203131212 its reverse (21213130233013), we get a palindrome (52246333364225).

The spelling of 31033203131212 in words is "thirty-one trillion, thirty-three billion, two hundred three million, one hundred thirty-one thousand, two hundred twelve".