145106731 has 8 divisors (see below), whose sum is σ = 180912384. Its totient is φ = 113070120.

The previous prime is 145106693. The next prime is 145106737. The reversal of 145106731 is 137601541.

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

It is a cyclic number.

It is not a de Polignac number, because 145106731 - 2⁷ = 145106603 is a prime.

It is a super-2 number, since 2×145106731² = 42111926763012722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145106731.

It is not an unprimeable number, because it can be changed into a prime (145106737) 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 in 7 ways as a sum of consecutive naturals, for example, 942175 + ... + 942328.

It is an arithmetic number, because the mean of its divisors is an integer number (22614048).

Almost surely, 2^145106731 is an apocalyptic number.

145106731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145106731 is a deficient number, since it is larger than the sum of its proper divisors (35805653).

145106731 is a wasteful number, since it uses less digits than its factorization.

145106731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884521.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 145106731 is about 12046.0255271189. The cubic root of 145106731 is about 525.4876569426.

The spelling of 145106731 in words is "one hundred forty-five million, one hundred six thousand, seven hundred thirty-one".