1131011029 has 4 divisors (see below), whose sum is σ = 1142209260. Its totient is φ = 1119812800.

The previous prime is 1131011023. The next prime is 1131011033. The reversal of 1131011029 is 9201101311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 920819025 + 210192004 = 30345^2 + 14498^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131011029 - 2¹⁹ = 1130486741 is a prime.

It is a super-3 number, since 3×1131011029³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131010997 and 1131011015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131011023) 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, 5598964 + ... + 5599165.

It is an arithmetic number, because the mean of its divisors is an integer number (285552315).

Almost surely, 2^1131011029 is an apocalyptic number.

It is an amenable number.

1131011029 is a deficient number, since it is larger than the sum of its proper divisors (11198231).

1131011029 is a wasteful number, since it uses less digits than its factorization.

1131011029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11198230.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1131011029 is about 33630.5074151432. The cubic root of 1131011029 is about 1041.8909842441.

The spelling of 1131011029 in words is "one billion, one hundred thirty-one million, eleven thousand, twenty-nine".