31143125411 has 2 divisors, whose sum is σ = 31143125412. Its totient is φ = 31143125410.

The previous prime is 31143125393. The next prime is 31143125417. The reversal of 31143125411 is 11452134113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31143125411 is a prime.

It is not a weakly prime, because it can be changed into another prime (31143125417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571562705 + 15571562706.

It is an arithmetic number, because the mean of its divisors is an integer number (15571562706).

Almost surely, 2^31143125411 is an apocalyptic number.

31143125411 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143125411 is an equidigital number, since it uses as much as digits as its factorization.

31143125411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

Adding to 31143125411 its reverse (11452134113), we get a palindrome (42595259524).

The spelling of 31143125411 in words is "thirty-one billion, one hundred forty-three million, one hundred twenty-five thousand, four hundred eleven".