531430251241 has 4 divisors (see below), whose sum is σ = 531434742912. Its totient is φ = 531425759572.

The previous prime is 531430251229. The next prime is 531430251301. The reversal of 531430251241 is 142152034135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142152034135 = 5 ⋅28430406827.

It is a cyclic number.

It is not a de Polignac number, because 531430251241 - 2¹¹ = 531430249193 is a prime.

It is a super-2 number, since 2×531430251241² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531430255241) 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, 2063425 + ... + 2306638.

It is an arithmetic number, because the mean of its divisors is an integer number (132858685728).

Almost surely, 2^531430251241 is an apocalyptic number.

It is an amenable number.

531430251241 is a deficient number, since it is larger than the sum of its proper divisors (4491671).

531430251241 is a wasteful number, since it uses less digits than its factorization.

531430251241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491670.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 531430251241 its reverse (142152034135), we get a palindrome (673582285376).

The spelling of 531430251241 in words is "five hundred thirty-one billion, four hundred thirty million, two hundred fifty-one thousand, two hundred forty-one".