11231107938 has 18 divisors (see below), whose sum is σ = 24335041419. Its totient is φ = 3743552772.

The previous prime is 11231107873. The next prime is 11231107939. The reversal of 11231107938 is 83970113211.

It can be written as a sum of positive squares in only one way, i.e., 5615553969 + 5615553969 = 74937^2 + 74937^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=74937.

It is a super-2 number, since 2×11231107938² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11231107939) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 437133 + ... + 462111.

Almost surely, 2^11231107938 is an apocalyptic number.

11231107938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11231107938 is an abundant number, since it is smaller than the sum of its proper divisors (13103933481).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11231107938 is an frugal number, since it uses more digits than its factorization.

11231107938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49966 (or 24984 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 11231107938 in words is "eleven billion, two hundred thirty-one million, one hundred seven thousand, nine hundred thirty-eight".