13440940931 has 8 divisors (see below), whose sum is σ = 14680542000. Its totient is φ = 12204289440.

The previous prime is 13440940921. The next prime is 13440940969. The reversal of 13440940931 is 13904904431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13440940931 - 2⁶ = 13440940867 is a prime.

It is a super-2 number, since 2×13440940931² (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 (13440940921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727856 + ... + 746093.

It is an arithmetic number, because the mean of its divisors is an integer number (1835067750).

Almost surely, 2^13440940931 is an apocalyptic number.

13440940931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13440940931 is a deficient number, since it is larger than the sum of its proper divisors (1239601069).

13440940931 is a wasteful number, since it uses less digits than its factorization.

13440940931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474789.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 13440940931 in words is "thirteen billion, four hundred forty million, nine hundred forty thousand, nine hundred thirty-one".