31332011213 has 16 divisors (see below), whose sum is σ = 31985423232. Its totient is φ = 30686040000.

The previous prime is 31332011201. The next prime is 31332011281. The reversal of 31332011213 is 31211023313.

It is a cyclic number.

It is not a de Polignac number, because 31332011213 - 2¹⁸ = 31331749069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332011813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6778043 + ... + 6782663.

It is an arithmetic number, because the mean of its divisors is an integer number (1999088952).

Almost surely, 2^31332011213 is an apocalyptic number.

It is an amenable number.

31332011213 is a deficient number, since it is larger than the sum of its proper divisors (653412019).

31332011213 is a wasteful number, since it uses less digits than its factorization.

31332011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31332011213 its reverse (31211023313), we get a palindrome (62543034526).

The spelling of 31332011213 in words is "thirty-one billion, three hundred thirty-two million, eleven thousand, two hundred thirteen".