1301001111 has 6 divisors (see below), whose sum is σ = 1879223840. Its totient is φ = 867334068.

The previous prime is 1301001061. The next prime is 1301001113. The reversal of 1301001111 is 1111001031.

It is not a de Polignac number, because 1301001111 - 2⁶ = 1301001047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 144555679 = 1301001111 / (1 + 3 + 0 + 1 + 0 + 0 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301001093 and 1301001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301001113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72277831 + ... + 72277848.

Almost surely, 2^1301001111 is an apocalyptic number.

1301001111 is a deficient number, since it is larger than the sum of its proper divisors (578222729).

1301001111 is a wasteful number, since it uses less digits than its factorization.

1301001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144555685 (or 144555682 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 1301001111 is about 36069.3929946153. The cubic root of 1301001111 is about 1091.6729664134.

Adding to 1301001111 its reverse (1111001031), we get a palindrome (2412002142).

The spelling of 1301001111 in words is "one billion, three hundred one million, one thousand, one hundred eleven".