1131356005 has 32 divisors (see below), whose sum is σ = 1521451008. Its totient is φ = 801964800.

The previous prime is 1131356003. The next prime is 1131356011. The reversal of 1131356005 is 5006531311.

It is not a de Polignac number, because 1131356005 - 2¹ = 1131356003 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 (1131356003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253695 + ... + 258115.

It is an arithmetic number, because the mean of its divisors is an integer number (47545344).

Almost surely, 2^1131356005 is an apocalyptic number.

It is an amenable number.

1131356005 is a deficient number, since it is larger than the sum of its proper divisors (390095003).

1131356005 is a wasteful number, since it uses less digits than its factorization.

1131356005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 1131356005 is about 33635.6359386886. The cubic root of 1131356005 is about 1041.9969044747.

Adding to 1131356005 its reverse (5006531311), we get a palindrome (6137887316).

The spelling of 1131356005 in words is "one billion, one hundred thirty-one million, three hundred fifty-six thousand, five".