45381731 has 2 divisors, whose sum is σ = 45381732. Its totient is φ = 45381730.

The previous prime is 45381719. The next prime is 45381757. The reversal of 45381731 is 13718354.

45381731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45381731 - 2⁶ = 45381667 is a prime.

It is a super-2 number, since 2×45381731² = 4119003017112722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45381131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22690865 + 22690866.

It is an arithmetic number, because the mean of its divisors is an integer number (22690866).

Almost surely, 2^45381731 is an apocalyptic number.

45381731 is a deficient number, since it is larger than the sum of its proper divisors (1).

45381731 is an equidigital number, since it uses as much as digits as its factorization.

45381731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 45381731 is about 6736.5963958070. The cubic root of 45381731 is about 356.6922601756.

The spelling of 45381731 in words is "forty-five million, three hundred eighty-one thousand, seven hundred thirty-one".