103775513381 has 2 divisors, whose sum is σ = 103775513382. Its totient is φ = 103775513380.

The previous prime is 103775513351. The next prime is 103775513399. The reversal of 103775513381 is 183315577301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62179910881 + 41595602500 = 249359^2 + 203950^2 .

It is a cyclic number.

It is not a de Polignac number, because 103775513381 - 2²² = 103771319077 is a prime.

It is a super-2 number, since 2×103775513381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103775513351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51887756690 + 51887756691.

It is an arithmetic number, because the mean of its divisors is an integer number (51887756691).

Almost surely, 2^103775513381 is an apocalyptic number.

It is an amenable number.

103775513381 is a deficient number, since it is larger than the sum of its proper divisors (1).

103775513381 is an equidigital number, since it uses as much as digits as its factorization.

103775513381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 103775513381 in words is "one hundred three billion, seven hundred seventy-five million, five hundred thirteen thousand, three hundred eighty-one".