11421814031 has 4 divisors (see below), whose sum is σ = 11473033152. Its totient is φ = 11370594912.

The previous prime is 11421814009. The next prime is 11421814037. The reversal of 11421814031 is 13041812411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11421814031 is a prime.

It is a super-2 number, since 2×11421814031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421814037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25609226 + ... + 25609671.

It is an arithmetic number, because the mean of its divisors is an integer number (2868258288).

Almost surely, 2^11421814031 is an apocalyptic number.

11421814031 is a deficient number, since it is larger than the sum of its proper divisors (51219121).

11421814031 is an equidigital number, since it uses as much as digits as its factorization.

11421814031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51219120.

The product of its (nonzero) digits is 768, while the sum is 26.

The spelling of 11421814031 in words is "eleven billion, four hundred twenty-one million, eight hundred fourteen thousand, thirty-one".