1131213031312 has 80 divisors (see below), whose sum is σ = 2704859433472. Its totient is φ = 446293255680.

The previous prime is 1131213031309. The next prime is 1131213031313. The reversal of 1131213031312 is 2131303121311.

It is not an unprimeable number, because it can be changed into a prime (1131213031313) 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, 524139 + ... + 1592842.

Almost surely, 2^{1131213031312} is an apocalyptic number.

It is an amenable number.

1131213031312 is an abundant number, since it is smaller than the sum of its proper divisors (1573646402160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131213031312 is a wasteful number, since it uses less digits than its factorization.

1131213031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117376 (or 2117370 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1131213031312 its reverse (2131303121311), we get a palindrome (3262516152623).

The spelling of 1131213031312 in words is "one trillion, one hundred thirty-one billion, two hundred thirteen million, thirty-one thousand, three hundred twelve".