306203040973 has 8 divisors (see below), whose sum is σ = 313717868856. Its totient is φ = 298690425600.

The previous prime is 306203040967. The next prime is 306203041033. The reversal of 306203040973 is 379040302603.

It can be written as a sum of positive squares in 4 ways, for example, as 11182428009 + 295020612964 = 105747^2 + 543158^2 .

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 306203040973 - 2¹³ = 306203032781 is a prime.

It is a super-2 number, since 2×306203040973² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306203040953) 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, 271198 + ... + 828223.

It is an arithmetic number, because the mean of its divisors is an integer number (39214733607).

Almost surely, 2^306203040973 is an apocalyptic number.

It is an amenable number.

306203040973 is a deficient number, since it is larger than the sum of its proper divisors (7514827883).

306203040973 is a wasteful number, since it uses less digits than its factorization.

306203040973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106255.

The product of its (nonzero) digits is 81648, while the sum is 37.

The spelling of 306203040973 in words is "three hundred six billion, two hundred three million, forty thousand, nine hundred seventy-three".