531311234033011 has 32 divisors (see below), whose sum is σ = 563630516951040. Its totient is φ = 500021397177600.

The previous prime is 531311234032987. The next prime is 531311234033033. The reversal of 531311234033011 is 110330432113135.

It is not a de Polignac number, because 531311234033011 - 2¹⁵ = 531311234000243 is a prime.

It is a super-2 number, since 2×531311234033011² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531311234034011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14306000280 + ... + 14306037418.

It is an arithmetic number, because the mean of its divisors is an integer number (17613453654720).

Almost surely, 2^{531311234033011} is an apocalyptic number.

531311234033011 is a deficient number, since it is larger than the sum of its proper divisors (32319282918029).

531311234033011 is a wasteful number, since it uses less digits than its factorization.

531311234033011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73035.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 531311234033011 its reverse (110330432113135), we get a palindrome (641641666146146).

The spelling of 531311234033011 in words is "five hundred thirty-one trillion, three hundred eleven billion, two hundred thirty-four million, thirty-three thousand, eleven".