521304331011 has 8 divisors (see below), whose sum is σ = 695096320704. Its totient is φ = 347524281000.

The previous prime is 521304331003. The next prime is 521304331049. The reversal of 521304331011 is 110133403125.

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

It is not a de Polignac number, because 521304331011 - 2³ = 521304331003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521304321011) 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, 2882541 + ... + 3058046.

It is an arithmetic number, because the mean of its divisors is an integer number (86887040088).

Almost surely, 2^521304331011 is an apocalyptic number.

521304331011 is a deficient number, since it is larger than the sum of its proper divisors (173791989693).

521304331011 is a wasteful number, since it uses less digits than its factorization.

521304331011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5969841.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 521304331011 its reverse (110133403125), we get a palindrome (631437734136).

The spelling of 521304331011 in words is "five hundred twenty-one billion, three hundred four million, three hundred thirty-one thousand, eleven".