1131213005 has 32 divisors (see below), whose sum is σ = 1516838400. Its totient is φ = 804125952.

The previous prime is 1131212939. The next prime is 1131213011. The reversal of 1131213005 is 5003121311.

It is a cyclic number.

It is not a de Polignac number, because 1131213005 - 2¹⁴ = 1131196621 is a prime.

It is a super-2 number, since 2×1131213005² = 2559285725362260050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 826832 + ... + 828198.

It is an arithmetic number, because the mean of its divisors is an integer number (47401200).

Almost surely, 2^1131213005 is an apocalyptic number.

It is an amenable number.

1131213005 is a deficient number, since it is larger than the sum of its proper divisors (385625395).

1131213005 is a wasteful number, since it uses less digits than its factorization.

1131213005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1131213005 is about 33633.5101498491. The cubic root of 1131213005 is about 1041.9530008655.

Adding to 1131213005 its reverse (5003121311), we get a palindrome (6134334316).

The spelling of 1131213005 in words is "one billion, one hundred thirty-one million, two hundred thirteen thousand, five".