11431302012 has 192 divisors, whose sum is σ = 33191424000. Its totient is φ = 3378122496.

The previous prime is 11431302011. The next prime is 11431302031. The reversal of 11431302012 is 21020313411.

11431302012 is a `hidden beast` number, since 1 + 1 + 431 + 30 + 201 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431302011) 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, 9079039 + ... + 9080297.

It is an arithmetic number, because the mean of its divisors is an integer number (172872000).

Almost surely, 2^11431302012 is an apocalyptic number.

11431302012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11431302012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16595712000).

11431302012 is an abundant number, since it is smaller than the sum of its proper divisors (21760121988).

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

11431302012 is a wasteful number, since it uses less digits than its factorization.

11431302012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11431302012 its reverse (21020313411), we get a palindrome (32451615423).

The spelling of 11431302012 in words is "eleven billion, four hundred thirty-one million, three hundred two thousand, twelve".