31434440111 has 2 divisors, whose sum is σ = 31434440112. Its totient is φ = 31434440110.

The previous prime is 31434440083. The next prime is 31434440129. The reversal of 31434440111 is 11104443413.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31434440111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31434440711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717220055 + 15717220056.

It is an arithmetic number, because the mean of its divisors is an integer number (15717220056).

Almost surely, 2^31434440111 is an apocalyptic number.

31434440111 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434440111 is an equidigital number, since it uses as much as digits as its factorization.

31434440111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 31434440111 its reverse (11104443413), we get a palindrome (42538883524).

The spelling of 31434440111 in words is "thirty-one billion, four hundred thirty-four million, four hundred forty thousand, one hundred eleven".