531400523113 has 4 divisors (see below), whose sum is σ = 536275757380. Its totient is φ = 526525288848.

The previous prime is 531400523111. The next prime is 531400523141. The reversal of 531400523113 is 311325004135.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 477554248809 + 53846274304 = 691053^2 + 232048^2 .

It is a cyclic number.

It is not a de Polignac number, because 531400523113 - 2¹ = 531400523111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531400523111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2437616970 + ... + 2437617187.

It is an arithmetic number, because the mean of its divisors is an integer number (134068939345).

Almost surely, 2^531400523113 is an apocalyptic number.

It is an amenable number.

531400523113 is a deficient number, since it is larger than the sum of its proper divisors (4875234267).

531400523113 is a wasteful number, since it uses less digits than its factorization.

531400523113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4875234266.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 531400523113 its reverse (311325004135), we get a palindrome (842725527248).

The spelling of 531400523113 in words is "five hundred thirty-one billion, four hundred million, five hundred twenty-three thousand, one hundred thirteen".