45311320421 has 4 divisors (see below), whose sum is σ = 45311777952. Its totient is φ = 45310862892.

The previous prime is 45311320399. The next prime is 45311320429. The reversal of 45311320421 is 12402311354.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45311320421 - 2¹⁰ = 45311319397 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 (45311320429) 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, 11315 + ... + 301248.

It is an arithmetic number, because the mean of its divisors is an integer number (11327944488).

Almost surely, 2^45311320421 is an apocalyptic number.

It is an amenable number.

45311320421 is a deficient number, since it is larger than the sum of its proper divisors (457531).

45311320421 is a wasteful number, since it uses less digits than its factorization.

45311320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457530.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 45311320421 its reverse (12402311354), we get a palindrome (57713631775).

The spelling of 45311320421 in words is "forty-five billion, three hundred eleven million, three hundred twenty thousand, four hundred twenty-one".