7345720231 has 2 divisors, whose sum is σ = 7345720232. Its totient is φ = 7345720230.

The previous prime is 7345720201. The next prime is 7345720313. The reversal of 7345720231 is 1320275437.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7345720231 - 2¹³ = 7345712039 is a prime.

It is a super-2 number, since 2×7345720231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7345720201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3672860115 + 3672860116.

It is an arithmetic number, because the mean of its divisors is an integer number (3672860116).

Almost surely, 2^7345720231 is an apocalyptic number.

7345720231 is a deficient number, since it is larger than the sum of its proper divisors (1).

7345720231 is an equidigital number, since it uses as much as digits as its factorization.

7345720231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 7345720231 is about 85707.1772432158. The cubic root of 7345720231 is about 1943.9188358205.

Adding to 7345720231 its reverse (1320275437), we get a palindrome (8665995668).

The spelling of 7345720231 in words is "seven billion, three hundred forty-five million, seven hundred twenty thousand, two hundred thirty-one".