31143031022111 has 2 divisors, whose sum is σ = 31143031022112. Its totient is φ = 31143031022110.

The previous prime is 31143031022101. The next prime is 31143031022149. The reversal of 31143031022111 is 11122013034113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31143031022111 - 2¹⁰ = 31143031021087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31143031022101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571515511055 + 15571515511056.

It is an arithmetic number, because the mean of its divisors is an integer number (15571515511056).

Almost surely, 2^{31143031022111} is an apocalyptic number.

31143031022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143031022111 is an equidigital number, since it uses as much as digits as its factorization.

31143031022111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31143031022111 its reverse (11122013034113), we get a palindrome (42265044056224).

The spelling of 31143031022111 in words is "thirty-one trillion, one hundred forty-three billion, thirty-one million, twenty-two thousand, one hundred eleven".