11401131420 has 144 divisors (see below), whose sum is σ = 39651568320. Its totient is φ = 2597557248.

The previous prime is 11401131397. The next prime is 11401131421. The reversal of 11401131420 is 2413110411.

11401131420 is a `hidden beast` number, since 114 + 0 + 1 + 131 + 420 = 666.

It is a super-2 number, since 2×11401131420² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 11401131393 and 11401131402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401131421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379926 + ... + 408834.

Almost surely, 2^11401131420 is an apocalyptic number.

11401131420 is a gapful number since it is divisible by the number (10) 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 11401131420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19825784160).

11401131420 is an abundant number, since it is smaller than the sum of its proper divisors (28250436900).

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

11401131420 is a wasteful number, since it uses less digits than its factorization.

11401131420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29244 (or 29239 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11401131420 its reverse (2413110411), we get a palindrome (13814241831).

The spelling of 11401131420 in words is "eleven billion, four hundred one million, one hundred thirty-one thousand, four hundred twenty".