11403131420 has 12 divisors (see below), whose sum is σ = 23946576024. Its totient is φ = 4561252560.

The previous prime is 11403131407. The next prime is 11403131449. The reversal of 11403131420 is 2413130411.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 570156571 = 11403131420 / (1 + 1 + 4 + 0 + 3 + 1 + 3 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 11403131392 and 11403131401.

It is a congruent number.

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, 285078266 + ... + 285078305.

It is an arithmetic number, because the mean of its divisors is an integer number (1995548002).

Almost surely, 2^11403131420 is an apocalyptic number.

11403131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11403131420 is an abundant number, since it is smaller than the sum of its proper divisors (12543444604).

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

11403131420 is a wasteful number, since it uses less digits than its factorization.

11403131420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570156580 (or 570156578 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11403131420 its reverse (2413130411), we get a palindrome (13816261831).

The spelling of 11403131420 in words is "eleven billion, four hundred three million, one hundred thirty-one thousand, four hundred twenty".