10309338881 has 4 divisors (see below), whose sum is σ = 10549090992. Its totient is φ = 10069586772.

The previous prime is 10309338869. The next prime is 10309338887. The reversal of 10309338881 is 18883390301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10309338881 is a prime.

It is a super-2 number, since 2×10309338881² (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 (10309338887) 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, 119875991 + ... + 119876076.

It is an arithmetic number, because the mean of its divisors is an integer number (2637272748).

Almost surely, 2^10309338881 is an apocalyptic number.

It is an amenable number.

10309338881 is a deficient number, since it is larger than the sum of its proper divisors (239752111).

10309338881 is an equidigital number, since it uses as much as digits as its factorization.

10309338881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239752110.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 10309338881 in words is "ten billion, three hundred nine million, three hundred thirty-eight thousand, eight hundred eighty-one".