1011531051 has 16 divisors (see below), whose sum is σ = 1508628000. Its totient is φ = 669825504.

The previous prime is 1011531047. The next prime is 1011531067. The reversal of 1011531051 is 1501351101.

It is not a de Polignac number, because 1011531051 - 2² = 1011531047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011531071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121696 + ... + 129741.

It is an arithmetic number, because the mean of its divisors is an integer number (94289250).

Almost surely, 2^1011531051 is an apocalyptic number.

1011531051 is a deficient number, since it is larger than the sum of its proper divisors (497096949).

1011531051 is a wasteful number, since it uses less digits than its factorization.

1011531051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251595 (or 251589 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 18.

The square root of 1011531051 is about 31804.5759443512. The cubic root of 1011531051 is about 1003.8290036848.

Adding to 1011531051 its reverse (1501351101), we get a palindrome (2512882152).

The spelling of 1011531051 in words is "one billion, eleven million, five hundred thirty-one thousand, fifty-one".