31143112043 has 2 divisors, whose sum is σ = 31143112044. Its totient is φ = 31143112042.

The previous prime is 31143112003. The next prime is 31143112057. The reversal of 31143112043 is 34021134113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31143112043 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31143112003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571556021 + 15571556022.

It is an arithmetic number, because the mean of its divisors is an integer number (15571556022).

Almost surely, 2^31143112043 is an apocalyptic number.

31143112043 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143112043 is an equidigital number, since it uses as much as digits as its factorization.

31143112043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31143112043 its reverse (34021134113), we get a palindrome (65164246156).

The spelling of 31143112043 in words is "thirty-one billion, one hundred forty-three million, one hundred twelve thousand, forty-three".