1131131212013 has 8 divisors (see below), whose sum is σ = 1234099441056. Its totient is φ = 1028186002800.

The previous prime is 1131131212007. The next prime is 1131131212019. The reversal of 1131131212013 is 3102121311311.

It is an interprime number because it is at equal distance from previous prime (1131131212007) and next prime (1131131212019).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131131212013 - 2⁶ = 1131131211949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131131212019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5652131 + ... + 5848832.

It is an arithmetic number, because the mean of its divisors is an integer number (154262430132).

Almost surely, 2^{1131131212013} is an apocalyptic number.

It is an amenable number.

1131131212013 is a deficient number, since it is larger than the sum of its proper divisors (102968229043).

1131131212013 is a wasteful number, since it uses less digits than its factorization.

1131131212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11509915.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1131131212013 its reverse (3102121311311), we get a palindrome (4233252523324).

The spelling of 1131131212013 in words is "one trillion, one hundred thirty-one billion, one hundred thirty-one million, two hundred twelve thousand, thirteen".