1031111013 has 16 divisors (see below), whose sum is σ = 1472048640. Its totient is φ = 639699456.

The previous prime is 1031110991. The next prime is 1031111033. The reversal of 1031111013 is 3101111301.

It is not a de Polignac number, because 1031111013 - 2⁹ = 1031110501 is a prime.

It is a super-2 number, since 2×1031111013² = 2126379842259772338, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031111013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031111033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109045 + ... + 118122.

It is an arithmetic number, because the mean of its divisors is an integer number (92003040).

Almost surely, 2^1031111013 is an apocalyptic number.

It is an amenable number.

1031111013 is a deficient number, since it is larger than the sum of its proper divisors (440937627).

1031111013 is a wasteful number, since it uses less digits than its factorization.

1031111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227276.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1031111013 is about 32110.9173490886. The cubic root of 1031111013 is about 1010.2646148475.

Adding to 1031111013 its reverse (3101111301), we get a palindrome (4132222314).

The spelling of 1031111013 in words is "one billion, thirty-one million, one hundred eleven thousand, thirteen".