1131402111 has 48 divisors (see below), whose sum is σ = 1821650688. Its totient is φ = 622339200.

The previous prime is 1131402109. The next prime is 1131402137. The reversal of 1131402111 is 1112041311.

It is not a de Polignac number, because 1131402111 - 2¹ = 1131402109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131402191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 447531 + ... + 450051.

It is an arithmetic number, because the mean of its divisors is an integer number (37951056).

Almost surely, 2^1131402111 is an apocalyptic number.

1131402111 is a deficient number, since it is larger than the sum of its proper divisors (690248577).

1131402111 is a wasteful number, since it uses less digits than its factorization.

1131402111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652 (or 2645 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1131402111 is about 33636.3213059930. The cubic root of 1131402111 is about 1042.0110590692.

Adding to 1131402111 its reverse (1112041311), we get a palindrome (2243443422).

The spelling of 1131402111 in words is "one billion, one hundred thirty-one million, four hundred two thousand, one hundred eleven".