103881520997 has 2 divisors, whose sum is σ = 103881520998. Its totient is φ = 103881520996.

The previous prime is 103881520957. The next prime is 103881520999. The reversal of 103881520997 is 799025188301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60540110401 + 43341410596 = 246049^2 + 208186^2 .

It is a cyclic number.

It is not a de Polignac number, because 103881520997 - 2¹² = 103881516901 is a prime.

Together with 103881520999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103881520999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51940760498 + 51940760499.

It is an arithmetic number, because the mean of its divisors is an integer number (51940760499).

Almost surely, 2^103881520997 is an apocalyptic number.

It is an amenable number.

103881520997 is a deficient number, since it is larger than the sum of its proper divisors (1).

103881520997 is an equidigital number, since it uses as much as digits as its factorization.

103881520997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 103881520997 in words is "one hundred three billion, eight hundred eighty-one million, five hundred twenty thousand, nine hundred ninety-seven".