521412311 has 16 divisors (see below), whose sum is σ = 602521920. Its totient is φ = 441987840.

The previous prime is 521412299. The next prime is 521412317. The reversal of 521412311 is 113214125.

It is not a de Polignac number, because 521412311 - 2⁶ = 521412247 is a prime.

It is a super-3 number, since 3×521412311³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521412317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248555 + ... + 250643.

It is an arithmetic number, because the mean of its divisors is an integer number (37657620).

Almost surely, 2^521412311 is an apocalyptic number.

521412311 is a deficient number, since it is larger than the sum of its proper divisors (81109609).

521412311 is a wasteful number, since it uses less digits than its factorization.

521412311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474.

The product of its digits is 240, while the sum is 20.

The square root of 521412311 is about 22834.4544712590. The cubic root of 521412311 is about 804.8725083901.

Adding to 521412311 its reverse (113214125), we get a palindrome (634626436).

The spelling of 521412311 in words is "five hundred twenty-one million, four hundred twelve thousand, three hundred eleven".