145307713 has 2 divisors, whose sum is σ = 145307714. Its totient is φ = 145307712.

The previous prime is 145307693. The next prime is 145307779. The reversal of 145307713 is 317703541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115627009 + 29680704 = 10753^2 + 5448^2 .

It is a cyclic number.

It is not a de Polignac number, because 145307713 - 2¹³ = 145299521 is a prime.

It is a super-2 number, since 2×145307713² = 42228662914580738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145304713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72653856 + 72653857.

It is an arithmetic number, because the mean of its divisors is an integer number (72653857).

Almost surely, 2^145307713 is an apocalyptic number.

It is an amenable number.

145307713 is a deficient number, since it is larger than the sum of its proper divisors (1).

145307713 is an equidigital number, since it uses as much as digits as its factorization.

145307713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 145307713 is about 12054.3648940954. The cubic root of 145307713 is about 525.7301562315.

The spelling of 145307713 in words is "one hundred forty-five million, three hundred seven thousand, seven hundred thirteen".