531213353364351 has 32 divisors (see below), whose sum is σ = 815991118525440. Its totient is φ = 301113450441216.

The previous prime is 531213353364319. The next prime is 531213353364361. The reversal of 531213353364351 is 153463353312135.

It is a happy number.

It is not a de Polignac number, because 531213353364351 - 2⁵ = 531213353364319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531213353364351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531213353364301) 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, 189118371 + ... + 191906708.

It is an arithmetic number, because the mean of its divisors is an integer number (25499722453920).

Almost surely, 2^{531213353364351} is an apocalyptic number.

531213353364351 is a deficient number, since it is larger than the sum of its proper divisors (284777765161089).

531213353364351 is a wasteful number, since it uses less digits than its factorization.

531213353364351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381025623.

The product of its digits is 4374000, while the sum is 48.

The spelling of 531213353364351 in words is "five hundred thirty-one trillion, two hundred thirteen billion, three hundred fifty-three million, three hundred sixty-four thousand, three hundred fifty-one".