31012033213 has 8 divisors (see below), whose sum is σ = 36165636800. Its totient is φ = 26581742460.

The previous prime is 31012033211. The next prime is 31012033219. The reversal of 31012033213 is 31233021013.

It is not a de Polignac number, because 31012033213 - 2¹ = 31012033211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012033211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 45206703 + ... + 45207388.

It is an arithmetic number, because the mean of its divisors is an integer number (4520704600).

Almost surely, 2^31012033213 is an apocalyptic number.

It is an amenable number.

31012033213 is a deficient number, since it is larger than the sum of its proper divisors (5153603587).

31012033213 is an frugal number, since it uses more digits than its factorization.

31012033213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90414112 (or 90414098 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31012033213 its reverse (31233021013), we get a palindrome (62245054226).

The spelling of 31012033213 in words is "thirty-one billion, twelve million, thirty-three thousand, two hundred thirteen".