31312203311 has 2 divisors, whose sum is σ = 31312203312. Its totient is φ = 31312203310.

The previous prime is 31312203283. The next prime is 31312203331. The reversal of 31312203311 is 11330221313.

It is an a-pointer prime, because the next prime (31312203331) can be obtained adding 31312203311 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31312203311 - 2³⁴ = 14132334127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31312203331) 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 as a sum of consecutive naturals, namely, 15656101655 + 15656101656.

It is an arithmetic number, because the mean of its divisors is an integer number (15656101656).

Almost surely, 2^31312203311 is an apocalyptic number.

31312203311 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312203311 is an equidigital number, since it uses as much as digits as its factorization.

31312203311 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 31312203311 its reverse (11330221313), we get a palindrome (42642424624).

The spelling of 31312203311 in words is "thirty-one billion, three hundred twelve million, two hundred three thousand, three hundred eleven".