15120531343 has 4 divisors (see below), whose sum is σ = 15368408968. Its totient is φ = 14872653720.

The previous prime is 15120531311. The next prime is 15120531347. The reversal of 15120531343 is 34313502151.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15120531343 - 2⁵ = 15120531311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15120531347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123938721 + ... + 123938842.

It is an arithmetic number, because the mean of its divisors is an integer number (3842102242).

Almost surely, 2^15120531343 is an apocalyptic number.

15120531343 is a deficient number, since it is larger than the sum of its proper divisors (247877625).

15120531343 is an equidigital number, since it uses as much as digits as its factorization.

15120531343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247877624.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 15120531343 in words is "fifteen billion, one hundred twenty million, five hundred thirty-one thousand, three hundred forty-three".