1103059981 has 2 divisors, whose sum is σ = 1103059982. Its totient is φ = 1103059980.

The previous prime is 1103059931. The next prime is 1103059999. The reversal of 1103059981 is 1899503011.

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., 759884356 + 343175625 = 27566^2 + 18525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103059981 - 2¹¹ = 1103057933 is a prime.

It is a super-2 number, since 2×1103059981² = 2433482643367440722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1103059981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103059931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551529990 + 551529991.

It is an arithmetic number, because the mean of its divisors is an integer number (551529991).

Almost surely, 2^1103059981 is an apocalyptic number.

It is an amenable number.

1103059981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103059981 is an equidigital number, since it uses as much as digits as its factorization.

1103059981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 1103059981 is about 33212.3468156046. The cubic root of 1103059981 is about 1033.2364285008.

The spelling of 1103059981 in words is "one billion, one hundred three million, fifty-nine thousand, nine hundred eighty-one".