1131311051 has 8 divisors (see below), whose sum is σ = 1271306400. Its totient is φ = 998883072.

The previous prime is 1131311029. The next prime is 1131311059. The reversal of 1131311051 is 1501131311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131311051 - 2¹⁴ = 1131294667 is a prime.

It is a super-2 number, since 2×1131311051² = 2559729388229449202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131311059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1891526 + ... + 1892123.

It is an arithmetic number, because the mean of its divisors is an integer number (158913300).

Almost surely, 2^1131311051 is an apocalyptic number.

1131311051 is a deficient number, since it is larger than the sum of its proper divisors (139995349).

1131311051 is a wasteful number, since it uses less digits than its factorization.

1131311051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783685.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 1131311051 is about 33634.9676824581. The cubic root of 1131311051 is about 1041.9831031751.

Adding to 1131311051 its reverse (1501131311), we get a palindrome (2632442362).

The spelling of 1131311051 in words is "one billion, one hundred thirty-one million, three hundred eleven thousand, fifty-one".