11833421731 has 4 divisors (see below), whose sum is σ = 12347918352. Its totient is φ = 11318925112.

The previous prime is 11833421689. The next prime is 11833421753. The reversal of 11833421731 is 13712433811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13712433811 = 197 ⋅69606263.

It is a cyclic number.

It is not a de Polignac number, because 11833421731 - 2⁹ = 11833421219 is a prime.

It is a super-2 number, since 2×11833421731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11833421791) 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, 257248276 + ... + 257248321.

It is an arithmetic number, because the mean of its divisors is an integer number (3086979588).

Almost surely, 2^11833421731 is an apocalyptic number.

11833421731 is a deficient number, since it is larger than the sum of its proper divisors (514496621).

11833421731 is an equidigital number, since it uses as much as digits as its factorization.

11833421731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514496620.

The product of its digits is 12096, while the sum is 34.

The spelling of 11833421731 in words is "eleven billion, eight hundred thirty-three million, four hundred twenty-one thousand, seven hundred thirty-one".