1131213113331 has 64 divisors (see below), whose sum is σ = 1856174745600. Its totient is φ = 598091397120.

The previous prime is 1131213113231. The next prime is 1131213113369. The reversal of 1131213113331 is 1333113121311.

It is not a de Polignac number, because 1131213113331 - 2⁹ = 1131213112819 is a prime.

It is a super-2 number, since 2×1131213113331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131213113231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8782165 + ... + 8910041.

It is an arithmetic number, because the mean of its divisors is an integer number (29002730400).

Almost surely, 2^{1131213113331} is an apocalyptic number.

1131213113331 is a deficient number, since it is larger than the sum of its proper divisors (724961632269).

1131213113331 is a wasteful number, since it uses less digits than its factorization.

1131213113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128324.

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

Adding to 1131213113331 its reverse (1333113121311), we get a palindrome (2464326234642).

The spelling of 1131213113331 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, one hundred thirteen thousand, three hundred thirty-one".