1131012011031 has 64 divisors (see below), whose sum is σ = 1819853844480. Its totient is φ = 610356314880.

The previous prime is 1131012011021. The next prime is 1131012011039. The reversal of 1131012011031 is 1301102101311.

It is not a de Polignac number, because 1131012011031 - 2¹¹ = 1131012008983 is a prime.

It is a super-2 number, since 2×1131012011031² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131012011031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131012011039) 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 63 ways as a sum of consecutive naturals, for example, 277683211 + ... + 277687283.

It is an arithmetic number, because the mean of its divisors is an integer number (28435216320).

Almost surely, 2^{1131012011031} is an apocalyptic number.

1131012011031 is a deficient number, since it is larger than the sum of its proper divisors (688841833449).

1131012011031 is a wasteful number, since it uses less digits than its factorization.

1131012011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1131012011031 its reverse (1301102101311), we get a palindrome (2432114112342).

The spelling of 1131012011031 in words is "one trillion, one hundred thirty-one billion, twelve million, eleven thousand, thirty-one".