11420340031 has 4 divisors (see below), whose sum is σ = 11420743432. Its totient is φ = 11419936632.

The previous prime is 11420340011. The next prime is 11420340037. The reversal of 11420340031 is 13004302411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13004302411 = 19 ⋅684436969.

It is a cyclic number.

It is not a de Polignac number, because 11420340031 - 2¹¹ = 11420337983 is a prime.

It is a super-2 number, since 2×11420340031² (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 = 11420339990 and 11420340008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420340037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155745 + ... + 217018.

It is an arithmetic number, because the mean of its divisors is an integer number (2855185858).

Almost surely, 2^11420340031 is an apocalyptic number.

11420340031 is a deficient number, since it is larger than the sum of its proper divisors (403401).

11420340031 is an equidigital number, since it uses as much as digits as its factorization.

11420340031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403400.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11420340031 its reverse (13004302411), we get a palindrome (24424642442).

The spelling of 11420340031 in words is "eleven billion, four hundred twenty million, three hundred forty thousand, thirty-one".