45431013531 has 4 divisors (see below), whose sum is σ = 60574684712. Its totient is φ = 30287342352.

The previous prime is 45431013527. The next prime is 45431013533. The reversal of 45431013531 is 13531013454.

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

It is not a de Polignac number, because 45431013531 - 2² = 45431013527 is a prime.

It is a super-2 number, since 2×45431013531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45431013533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7571835586 + ... + 7571835591.

It is an arithmetic number, because the mean of its divisors is an integer number (15143671178).

Almost surely, 2^45431013531 is an apocalyptic number.

45431013531 is a deficient number, since it is larger than the sum of its proper divisors (15143671181).

45431013531 is a wasteful number, since it uses less digits than its factorization.

45431013531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15143671180.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 45431013531 its reverse (13531013454), we get a palindrome (58962026985).

The spelling of 45431013531 in words is "forty-five billion, four hundred thirty-one million, thirteen thousand, five hundred thirty-one".