1001011097 has 4 divisors (see below), whose sum is σ = 1005500160. Its totient is φ = 996522036.

The previous prime is 1001011073. The next prime is 1001011103. The reversal of 1001011097 is 7901101001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7901101001 = 30893 ⋅255757.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001011097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001011007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2244197 + ... + 2244642.

It is an arithmetic number, because the mean of its divisors is an integer number (251375040).

Almost surely, 2^1001011097 is an apocalyptic number.

It is an amenable number.

1001011097 is a deficient number, since it is larger than the sum of its proper divisors (4489063).

1001011097 is an equidigital number, since it uses as much as digits as its factorization.

1001011097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4489062.

The product of its (nonzero) digits is 63, while the sum is 20.

The square root of 1001011097 is about 31638.7594099389. The cubic root of 1001011097 is about 1000.3369188063.

Adding to 1001011097 its reverse (7901101001), we get a palindrome (8902112098).

The spelling of 1001011097 in words is "one billion, one million, eleven thousand, ninety-seven".