1013511081 has 16 divisors (see below), whose sum is σ = 1479457728. Its totient is φ = 612057600.

The previous prime is 1013511061. The next prime is 1013511097. The reversal of 1013511081 is 1801153101.

It is a happy number.

It is not a de Polignac number, because 1013511081 - 2⁹ = 1013510569 is a prime.

It is a super-3 number, since 3×1013511081³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1013511041) 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, 45376 + ... + 63921.

It is an arithmetic number, because the mean of its divisors is an integer number (92466108).

Almost surely, 2^1013511081 is an apocalyptic number.

1013511081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1013511081 is a deficient number, since it is larger than the sum of its proper divisors (465946647).

1013511081 is a wasteful number, since it uses less digits than its factorization.

1013511081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109592.

The product of its (nonzero) digits is 120, while the sum is 21.

The square root of 1013511081 is about 31835.6887941819. The cubic root of 1013511081 is about 1004.4835613014.

Adding to 1013511081 its reverse (1801153101), we get a palindrome (2814664182).

The spelling of 1013511081 in words is "one billion, thirteen million, five hundred eleven thousand, eighty-one".