103320131261 has 2 divisors, whose sum is σ = 103320131262. Its totient is φ = 103320131260.

The previous prime is 103320131177. The next prime is 103320131279. The reversal of 103320131261 is 162131023301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68995528900 + 34324602361 = 262670^2 + 185269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103320131261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103320131281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51660065630 + 51660065631.

It is an arithmetic number, because the mean of its divisors is an integer number (51660065631).

Almost surely, 2^103320131261 is an apocalyptic number.

It is an amenable number.

103320131261 is a deficient number, since it is larger than the sum of its proper divisors (1).

103320131261 is an equidigital number, since it uses as much as digits as its factorization.

103320131261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 103320131261 its reverse (162131023301), we get a palindrome (265451154562).

The spelling of 103320131261 in words is "one hundred three billion, three hundred twenty million, one hundred thirty-one thousand, two hundred sixty-one".