535221031 has 2 divisors, whose sum is σ = 535221032. Its totient is φ = 535221030.

The previous prime is 535220993. The next prime is 535221061. The reversal of 535221031 is 130122535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 535221031 - 2¹⁵ = 535188263 is a prime.

It is a super-2 number, since 2×535221031² = 572923104049405922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_28110613 and since 535221031 and 28110613 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 535220993 and 535221011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (535221061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267610515 + 267610516.

It is an arithmetic number, because the mean of its divisors is an integer number (267610516).

Almost surely, 2^535221031 is an apocalyptic number.

535221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

535221031 is an equidigital number, since it uses as much as digits as its factorization.

535221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 535221031 is about 23134.8445207656. The cubic root of 535221031 is about 811.9159193477.

Adding to 535221031 its reverse (130122535), we get a palindrome (665343566).

The spelling of 535221031 in words is "five hundred thirty-five million, two hundred twenty-one thousand, thirty-one".