11403131212 has 12 divisors (see below), whose sum is σ = 21769614216. Its totient is φ = 5183241440.

The previous prime is 11403131167. The next prime is 11403131231. The reversal of 11403131212 is 21213130411.

It is a self number, because there is not a number n which added to its sum of digits gives 11403131212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129580993 + ... + 129581080.

It is an arithmetic number, because the mean of its divisors is an integer number (1814134518).

Almost surely, 2^11403131212 is an apocalyptic number.

It is an amenable number.

11403131212 is a deficient number, since it is larger than the sum of its proper divisors (10366483004).

11403131212 is a wasteful number, since it uses less digits than its factorization.

11403131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259162088 (or 259162086 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11403131212 its reverse (21213130411), we get a palindrome (32616261623).

The spelling of 11403131212 in words is "eleven billion, four hundred three million, one hundred thirty-one thousand, two hundred twelve".