13531201312 has 12 divisors (see below), whose sum is σ = 26639552646. Its totient is φ = 6765600640.

The previous prime is 13531201261. The next prime is 13531201331. The reversal of 13531201312 is 21310213531.

It can be written as a sum of positive squares in only one way, i.e., 7409077776 + 6122123536 = 86076^2 + 78244^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211424989 + ... + 211425052.

Almost surely, 2^13531201312 is an apocalyptic number.

It is an amenable number.

13531201312 is a deficient number, since it is larger than the sum of its proper divisors (13108351334).

13531201312 is an equidigital number, since it uses as much as digits as its factorization.

13531201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422850051 (or 422850043 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 13531201312 its reverse (21310213531), we get a palindrome (34841414843).

The spelling of 13531201312 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, three hundred twelve".