1300111381 has 2 divisors, whose sum is σ = 1300111382. Its totient is φ = 1300111380.

The previous prime is 1300111369. The next prime is 1300111391. The reversal of 1300111381 is 1831110031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 850247281 + 449864100 = 29159^2 + 21210^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300111381 - 2⁹ = 1300110869 is a prime.

It is a super-2 number, since 2×1300111381² = 3380579206011454322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300111301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650055690 + 650055691.

It is an arithmetic number, because the mean of its divisors is an integer number (650055691).

Almost surely, 2^1300111381 is an apocalyptic number.

It is an amenable number.

1300111381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300111381 is an equidigital number, since it uses as much as digits as its factorization.

1300111381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1300111381 is about 36057.0572981213. The cubic root of 1300111381 is about 1091.4240515122.

The spelling of 1300111381 in words is "one billion, three hundred million, one hundred eleven thousand, three hundred eighty-one".