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145031351 = 1913755717
BaseRepresentation
bin10001010010100…
…00000010110111
3101002220100121112
420221100002313
5244112000401
622220305235
73410513633
oct1051200267
9332810545
10145031351
1174959223
12406a221b
132407c48a
1415393dc3
15caec3bb
hex8a500b7

145031351 has 8 divisors (see below), whose sum is σ = 153781680. Its totient is φ = 136392768.

The previous prime is 145031347. The next prime is 145031377. The reversal of 145031351 is 153130541.

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 145031351 - 22 = 145031347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145031311) 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 7 ways as a sum of consecutive naturals, for example, 25256 + ... + 30461.

It is an arithmetic number, because the mean of its divisors is an integer number (19222710).

Almost surely, 2145031351 is an apocalyptic number.

145031351 is a deficient number, since it is larger than the sum of its proper divisors (8750329).

145031351 is a wasteful number, since it uses less digits than its factorization.

145031351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55873.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 145031351 is about 12042.8962878537. The cubic root of 145031351 is about 525.3966477928.

Adding to 145031351 its reverse (153130541), we get a palindrome (298161892).

The spelling of 145031351 in words is "one hundred forty-five million, thirty-one thousand, three hundred fifty-one".

Divisors: 1 19 137 2603 55717 1058623 7633229 145031351