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145403131306 = 2104161697973
BaseRepresentation
bin1000011101101010110…
…0111011010110101010
3111220022101122101111111
42013122230323112222
54340241200200211
6150444113420534
713335140136466
oct2073254732652
9456271571444
10145403131306
1156735305714
122421b26a74a
13109330ba504
14707506b4a6
153bb0259421
hex21dab3b5aa

145403131306 has 8 divisors (see below), whose sum is σ = 218107103364. Its totient is φ = 72700763520.

The previous prime is 145403131303. The next prime is 145403131319. The reversal of 145403131306 is 603131304541.

Adding to 145403131306 its reverse (603131304541), we get a palindrome (748534435847).

It can be written as a sum of positive squares in 2 ways, for example, as 144749050681 + 654080625 = 380459^2 + 25575^2 .

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

It is a super-2 number, since 2×1454031313062 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145403131303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140665 + ... + 557308.

Almost surely, 2145403131306 is an apocalyptic number.

145403131306 is a deficient number, since it is larger than the sum of its proper divisors (72703972058).

145403131306 is a wasteful number, since it uses less digits than its factorization.

145403131306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802136.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 145403131306 in words is "one hundred forty-five billion, four hundred three million, one hundred thirty-one thousand, three hundred six".

Divisors: 1 2 104161 208322 697973 1395946 72701565653 145403131306