130561535431 has 4 divisors (see below), whose sum is σ = 136238123952. Its totient is φ = 124884946912.

The previous prime is 130561535399. The next prime is 130561535437. The reversal of 130561535431 is 134535165031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134535165031 = 769 ⋅174948199.

It is a cyclic number.

It is not a de Polignac number, because 130561535431 - 2⁵ = 130561535399 is a prime.

It is a super-3 number, since 3×130561535431³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130561535437) 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, 2838294226 + ... + 2838294271.

It is an arithmetic number, because the mean of its divisors is an integer number (34059530988).

Almost surely, 2^130561535431 is an apocalyptic number.

130561535431 is a deficient number, since it is larger than the sum of its proper divisors (5676588521).

130561535431 is an equidigital number, since it uses as much as digits as its factorization.

130561535431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676588520.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 130561535431 in words is "one hundred thirty billion, five hundred sixty-one million, five hundred thirty-five thousand, four hundred thirty-one".