145300731 has 8 divisors (see below), whose sum is σ = 195128640. Its totient is φ = 96169992.

The previous prime is 145300703. The next prime is 145300763. The reversal of 145300731 is 137003541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145300731 - 2¹⁷ = 145169659 is a prime.

It is a super-2 number, since 2×145300731² = 42224604858268722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145300031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173805 + ... + 174638.

It is an arithmetic number, because the mean of its divisors is an integer number (24391080).

Almost surely, 2^145300731 is an apocalyptic number.

145300731 is a deficient number, since it is larger than the sum of its proper divisors (49827909).

145300731 is a wasteful number, since it uses less digits than its factorization.

145300731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348585.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 145300731 is about 12054.0752859769. The cubic root of 145300731 is about 525.7217356949.

The spelling of 145300731 in words is "one hundred forty-five million, three hundred thousand, seven hundred thirty-one".