103103131993 has 2 divisors, whose sum is σ = 103103131994. Its totient is φ = 103103131992.

The previous prime is 103103131969. The next prime is 103103132053. The reversal of 103103131993 is 399131301301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75027783744 + 28075348249 = 273912^2 + 167557^2 .

It is a cyclic number.

It is not a de Polignac number, because 103103131993 - 2¹³ = 103103123801 is a prime.

It is not a weakly prime, because it can be changed into another prime (103103131093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51551565996 + 51551565997.

It is an arithmetic number, because the mean of its divisors is an integer number (51551565997).

Almost surely, 2^103103131993 is an apocalyptic number.

It is an amenable number.

103103131993 is a deficient number, since it is larger than the sum of its proper divisors (1).

103103131993 is an equidigital number, since it uses as much as digits as its factorization.

103103131993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 34.

The spelling of 103103131993 in words is "one hundred three billion, one hundred three million, one hundred thirty-one thousand, nine hundred ninety-three".