13121231302 has 16 divisors (see below), whose sum is σ = 20161365840. Its totient is φ = 6401106432.

The previous prime is 13121231267. The next prime is 13121231303. The reversal of 13121231302 is 20313212131.

It is a self number, because there is not a number n which added to its sum of digits gives 13121231302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121231303) 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, 2223 + ... + 162010.

It is an arithmetic number, because the mean of its divisors is an integer number (1260085365).

Almost surely, 2^13121231302 is an apocalyptic number.

13121231302 is a deficient number, since it is larger than the sum of its proper divisors (7040134538).

13121231302 is a wasteful number, since it uses less digits than its factorization.

13121231302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165207.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13121231302 its reverse (20313212131), we get a palindrome (33434443433).

The spelling of 13121231302 in words is "thirteen billion, one hundred twenty-one million, two hundred thirty-one thousand, three hundred two".