1131231113331 has 16 divisors (see below), whose sum is σ = 1732028499840. Its totient is φ = 649510686720.

The previous prime is 1131231113297. The next prime is 1131231113351. The reversal of 1131231113331 is 1333111321311.

It is not a de Polignac number, because 1131231113331 - 2¹⁹ = 1131230589043 is a prime.

It is a super-2 number, since 2×1131231113331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131231113351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902097550 + ... + 902098803.

It is an arithmetic number, because the mean of its divisors is an integer number (108251781240).

Almost surely, 2^{1131231113331} is an apocalyptic number.

1131231113331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131231113331 is a deficient number, since it is larger than the sum of its proper divisors (600797386509).

1131231113331 is a wasteful number, since it uses less digits than its factorization.

1131231113331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804196386.

The product of its digits is 486, while the sum is 24.

Adding to 1131231113331 its reverse (1333111321311), we get a palindrome (2464342434642).

The spelling of 1131231113331 in words is "one trillion, one hundred thirty-one billion, two hundred thirty-one million, one hundred thirteen thousand, three hundred thirty-one".