1131031230331 has 16 divisors (see below), whose sum is σ = 1199234030400. Its totient is φ = 1063015170048.

The previous prime is 1131031230181. The next prime is 1131031230349. The reversal of 1131031230331 is 1330321301311.

It is a cyclic number.

It is not a de Polignac number, because 1131031230331 - 2⁹ = 1131031229819 is a prime.

It is a super-2 number, since 2×1131031230331² (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 (1131031230391) 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, 39756210 + ... + 39784648.

It is an arithmetic number, because the mean of its divisors is an integer number (74952126900).

Almost surely, 2^{1131031230331} is an apocalyptic number.

1131031230331 is a deficient number, since it is larger than the sum of its proper divisors (68202800069).

1131031230331 is a wasteful number, since it uses less digits than its factorization.

1131031230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31638.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1131031230331 its reverse (1330321301311), we get a palindrome (2461352531642).

The spelling of 1131031230331 in words is "one trillion, one hundred thirty-one billion, thirty-one million, two hundred thirty thousand, three hundred thirty-one".