31132030213 has 4 divisors (see below), whose sum is σ = 32485596768. Its totient is φ = 29778463660.

The previous prime is 31132030199. The next prime is 31132030217. The reversal of 31132030213 is 31203023113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31132030213 - 2³³ = 22542095621 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 (31132030217) 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 3 ways as a sum of consecutive naturals, for example, 676783243 + ... + 676783288.

It is an arithmetic number, because the mean of its divisors is an integer number (8121399192).

Almost surely, 2^31132030213 is an apocalyptic number.

It is an amenable number.

31132030213 is a deficient number, since it is larger than the sum of its proper divisors (1353566555).

31132030213 is a wasteful number, since it uses less digits than its factorization.

31132030213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353566554.

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

Adding to 31132030213 its reverse (31203023113), we get a palindrome (62335053326).

The spelling of 31132030213 in words is "thirty-one billion, one hundred thirty-two million, thirty thousand, two hundred thirteen".