10103131111 has 2 divisors, whose sum is σ = 10103131112. Its totient is φ = 10103131110.

The previous prime is 10103131081. The next prime is 10103131147. The reversal of 10103131111 is 11113130101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10103131111 - 2⁹ = 10103130599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10103131091 and 10103131100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10103131151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051565555 + 5051565556.

It is an arithmetic number, because the mean of its divisors is an integer number (5051565556).

Almost surely, 2^10103131111 is an apocalyptic number.

10103131111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10103131111 is an equidigital number, since it uses as much as digits as its factorization.

10103131111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 10103131111 its reverse (11113130101), we get a palindrome (21216261212).

The spelling of 10103131111 in words is "ten billion, one hundred three million, one hundred thirty-one thousand, one hundred eleven".