145103381 has 16 divisors (see below), whose sum is σ = 158482800. Its totient is φ = 132295680.

The previous prime is 145103377. The next prime is 145103393. The reversal of 145103381 is 183301541.

It can be written as a sum of positive squares in 8 ways, for example, as 53728900 + 91374481 = 7330^2 + 9559^2 .

It is a cyclic number.

It is not a de Polignac number, because 145103381 - 2² = 145103377 is a prime.

It is a super-2 number, since 2×145103381² = 42109982355262322, 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 145103381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145103311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219191 + ... + 219851.

It is an arithmetic number, because the mean of its divisors is an integer number (9905175).

Almost surely, 2^145103381 is an apocalyptic number.

It is an amenable number.

145103381 is a deficient number, since it is larger than the sum of its proper divisors (13379419).

145103381 is a wasteful number, since it uses less digits than its factorization.

145103381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 145103381 is about 12045.8864763039. The cubic root of 145103381 is about 525.4836130291.

The spelling of 145103381 in words is "one hundred forty-five million, one hundred three thousand, three hundred eighty-one".