13131130312 has 8 divisors (see below), whose sum is σ = 24620869350. Its totient is φ = 6565565152.

The previous prime is 13131130301. The next prime is 13131130343. The reversal of 13131130312 is 21303113131.

It can be written as a sum of positive squares in only one way, i.e., 12026631556 + 1104498756 = 109666^2 + 33234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 13131130312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820695637 + ... + 820695652.

Almost surely, 2^13131130312 is an apocalyptic number.

It is an amenable number.

13131130312 is a deficient number, since it is larger than the sum of its proper divisors (11489739038).

13131130312 is a wasteful number, since it uses less digits than its factorization.

13131130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641391295 (or 1641391291 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13131130312 its reverse (21303113131), we get a palindrome (34434243443).

The spelling of 13131130312 in words is "thirteen billion, one hundred thirty-one million, one hundred thirty thousand, three hundred twelve".