45240331 has 2 divisors, whose sum is σ = 45240332. Its totient is φ = 45240330.

The previous prime is 45240329. The next prime is 45240347. The reversal of 45240331 is 13304254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45240331 - 2¹ = 45240329 is a prime.

It is a super-2 number, since 2×45240331² = 4093375097979122, which contains 22 as substring.

Together with 45240329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45240301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22620165 + 22620166.

It is an arithmetic number, because the mean of its divisors is an integer number (22620166).

Almost surely, 2^45240331 is an apocalyptic number.

45240331 is a deficient number, since it is larger than the sum of its proper divisors (1).

45240331 is an equidigital number, since it uses as much as digits as its factorization.

45240331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 45240331 is about 6726.0932940303. The cubic root of 45240331 is about 356.3214152099.

Adding to 45240331 its reverse (13304254), we get a palindrome (58544585).

The spelling of 45240331 in words is "forty-five million, two hundred forty thousand, three hundred thirty-one".