13531212051 has 32 divisors (see below), whose sum is σ = 21440693760. Its totient is φ = 7426750464.

The previous prime is 13531212047. The next prime is 13531212077. The reversal of 13531212051 is 15021213531.

It is not a de Polignac number, because 13531212051 - 2² = 13531212047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13531211051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59976 + ... + 175098.

It is an arithmetic number, because the mean of its divisors is an integer number (670021680).

Almost surely, 2^13531212051 is an apocalyptic number.

13531212051 is a deficient number, since it is larger than the sum of its proper divisors (7909481709).

13531212051 is a wasteful number, since it uses less digits than its factorization.

13531212051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115355.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 13531212051 its reverse (15021213531), we get a palindrome (28552425582).

The spelling of 13531212051 in words is "thirteen billion, five hundred thirty-one million, two hundred twelve thousand, fifty-one".