31213302311 has 2 divisors, whose sum is σ = 31213302312. Its totient is φ = 31213302310.

The previous prime is 31213302299. The next prime is 31213302361. The reversal of 31213302311 is 11320331213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31213302311 - 2³⁰ = 30139560487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31213302361) 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 as a sum of consecutive naturals, namely, 15606651155 + 15606651156.

It is an arithmetic number, because the mean of its divisors is an integer number (15606651156).

Almost surely, 2^31213302311 is an apocalyptic number.

31213302311 is a deficient number, since it is larger than the sum of its proper divisors (1).

31213302311 is an equidigital number, since it uses as much as digits as its factorization.

31213302311 is an odious number, because the sum of its binary digits is odd.

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

Adding to 31213302311 its reverse (11320331213), we get a palindrome (42533633524).

The spelling of 31213302311 in words is "thirty-one billion, two hundred thirteen million, three hundred two thousand, three hundred eleven".