103131133109 has 2 divisors, whose sum is σ = 103131133110. Its totient is φ = 103131133108.

The previous prime is 103131133073. The next prime is 103131133289. The reversal of 103131133109 is 901331131301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101292610225 + 1838522884 = 318265^2 + 42878^2 .

It is a cyclic number.

It is not a de Polignac number, because 103131133109 - 2¹⁶ = 103131067573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103131133409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51565566554 + 51565566555.

It is an arithmetic number, because the mean of its divisors is an integer number (51565566555).

Almost surely, 2^103131133109 is an apocalyptic number.

It is an amenable number.

103131133109 is a deficient number, since it is larger than the sum of its proper divisors (1).

103131133109 is an equidigital number, since it uses as much as digits as its factorization.

103131133109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 26.

The spelling of 103131133109 in words is "one hundred three billion, one hundred thirty-one million, one hundred thirty-three thousand, one hundred nine".