31130002213 has 2 divisors, whose sum is σ = 31130002214. Its totient is φ = 31130002212.

The previous prime is 31130002153. The next prime is 31130002261. The reversal of 31130002213 is 31220003113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30934477924 + 195524289 = 175882^2 + 13983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31130002213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31130002283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565001106 + 15565001107.

It is an arithmetic number, because the mean of its divisors is an integer number (15565001107).

Almost surely, 2^31130002213 is an apocalyptic number.

It is an amenable number.

31130002213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130002213 is an equidigital number, since it uses as much as digits as its factorization.

31130002213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31130002213 its reverse (31220003113), we get a palindrome (62350005326).

The spelling of 31130002213 in words is "thirty-one billion, one hundred thirty million, two thousand, two hundred thirteen".