1011253247 has 4 divisors (see below), whose sum is σ = 1011541896. Its totient is φ = 1010964600.

The previous prime is 1011253219. The next prime is 1011253261. The reversal of 1011253247 is 7423521101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011253247 - 2²⁸ = 742817791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011253267) 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, 139004 + ... + 146097.

It is an arithmetic number, because the mean of its divisors is an integer number (252885474).

Almost surely, 2^1011253247 is an apocalyptic number.

1011253247 is a deficient number, since it is larger than the sum of its proper divisors (288649).

1011253247 is an equidigital number, since it uses as much as digits as its factorization.

1011253247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288648.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1011253247 is about 31800.2082854814. The cubic root of 1011253247 is about 1003.7370990269.

Adding to 1011253247 its reverse (7423521101), we get a palindrome (8434774348).

The spelling of 1011253247 in words is "one billion, eleven million, two hundred fifty-three thousand, two hundred forty-seven".