13981012 has 6 divisors (see below), whose sum is σ = 24466778. Its totient is φ = 6990504.

The previous prime is 13980991. The next prime is 13981013. The reversal of 13981012 is 21018931.

13981012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7650756 + 6330256 = 2766^2 + 2516^2 .

It is a nialpdrome in base 4 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1747623 + ... + 1747630.

Almost surely, 2^13981012 is an apocalyptic number.

It is an amenable number.

13981012 is a deficient number, since it is larger than the sum of its proper divisors (10485766).

13981012 is a wasteful number, since it uses less digits than its factorization.

13981012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495257 (or 3495255 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13981012 is about 3739.1191476068. The cubic root of 13981012 is about 240.9052157354.

Adding to 13981012 its reverse (21018931), we get a palindrome (34999943).

The spelling of 13981012 in words is "thirteen million, nine hundred eighty-one thousand, twelve".