45000407731 has 2 divisors, whose sum is σ = 45000407732. Its totient is φ = 45000407730.

The previous prime is 45000407717. The next prime is 45000407801. The reversal of 45000407731 is 13770400054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45000407731 - 2⁹ = 45000407219 is a prime.

It is a super-2 number, since 2×45000407731² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45000407693 and 45000407702.

It is not a weakly prime, because it can be changed into another prime (45000417731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22500203865 + 22500203866.

It is an arithmetic number, because the mean of its divisors is an integer number (22500203866).

Almost surely, 2^45000407731 is an apocalyptic number.

45000407731 is a deficient number, since it is larger than the sum of its proper divisors (1).

45000407731 is an equidigital number, since it uses as much as digits as its factorization.

45000407731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

Adding to 45000407731 its reverse (13770400054), we get a palindrome (58770807785).

The spelling of 45000407731 in words is "forty-five billion, four hundred seven thousand, seven hundred thirty-one".