11420440131 has 8 divisors (see below), whose sum is σ = 15233903440. Its totient is φ = 7610301792.

The previous prime is 11420440121. The next prime is 11420440139. The reversal of 11420440131 is 13104402411.

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

It is not a de Polignac number, because 11420440131 - 2¹⁴ = 11420423747 is a prime.

It is a super-2 number, since 2×11420440131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11420440098 and 11420440107.

It is not an unprimeable number, because it can be changed into a prime (11420440139) 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, 823216 + ... + 836973.

It is an arithmetic number, because the mean of its divisors is an integer number (1904237930).

Almost surely, 2^11420440131 is an apocalyptic number.

11420440131 is a deficient number, since it is larger than the sum of its proper divisors (3813463309).

11420440131 is a wasteful number, since it uses less digits than its factorization.

11420440131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662485.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 11420440131 its reverse (13104402411), we get a palindrome (24524842542).

The spelling of 11420440131 in words is "eleven billion, four hundred twenty million, four hundred forty thousand, one hundred thirty-one".