13045051531 has 4 divisors (see below), whose sum is σ = 13045414000. Its totient is φ = 13044689064.

The previous prime is 13045051529. The next prime is 13045051543. The reversal of 13045051531 is 13515054031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13515054031 = 6569 ⋅2057399.

It is a cyclic number.

It is not a de Polignac number, because 13045051531 - 2¹ = 13045051529 is a prime.

It is a super-2 number, since 2×13045051531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13045051531.

It is not an unprimeable number, because it can be changed into a prime (13045051511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120456 + ... + 201493.

It is an arithmetic number, because the mean of its divisors is an integer number (3261353500).

Almost surely, 2^13045051531 is an apocalyptic number.

13045051531 is a deficient number, since it is larger than the sum of its proper divisors (362469).

13045051531 is an equidigital number, since it uses as much as digits as its factorization.

13045051531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362468.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 13045051531 in words is "thirteen billion, forty-five million, fifty-one thousand, five hundred thirty-one".