1131012111131 has 12 divisors (see below), whose sum is σ = 1316297679408. Its totient is φ = 968974351632.

The previous prime is 1131012111121. The next prime is 1131012111197. The reversal of 1131012111131 is 1311112101311.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1131012111131 is a prime.

It is a super-2 number, since 2×1131012111131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131012111121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5427656 + ... + 5632181.

It is an arithmetic number, because the mean of its divisors is an integer number (109691473284).

Almost surely, 2^{1131012111131} is an apocalyptic number.

1131012111131 is a deficient number, since it is larger than the sum of its proper divisors (185285568277).

1131012111131 is a wasteful number, since it uses less digits than its factorization.

1131012111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11061938 (or 11061931 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1131012111131 its reverse (1311112101311), we get a palindrome (2442124212442).

The spelling of 1131012111131 in words is "one trillion, one hundred thirty-one billion, twelve million, one hundred eleven thousand, one hundred thirty-one".