13140231994 has 8 divisors (see below), whose sum is σ = 19980352980. Its totient is φ = 6480114336.

The previous prime is 13140231967. The next prime is 13140231997. The reversal of 13140231994 is 49913204131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11840268969 + 1299963025 = 108813^2 + 36055^2 .

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

It is a super-2 number, since 2×13140231994² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13140231997) 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, 45000649 + ... + 45000940.

Almost surely, 2^13140231994 is an apocalyptic number.

13140231994 is a deficient number, since it is larger than the sum of its proper divisors (6840120986).

13140231994 is an equidigital number, since it uses as much as digits as its factorization.

13140231994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90001664.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 13140231994 in words is "thirteen billion, one hundred forty million, two hundred thirty-one thousand, nine hundred ninety-four".