2231430304531 has 4 divisors (see below), whose sum is σ = 2232332624152. Its totient is φ = 2230527984912.

The previous prime is 2231430304529. The next prime is 2231430304553. The reversal of 2231430304531 is 1354030341322.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2231430304531 - 2¹ = 2231430304529 is a prime.

It is a super-3 number, since 3×2231430304531³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231430304493 and 2231430304502.

It is not an unprimeable number, because it can be changed into a prime (2231430304561) 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 in 3 ways as a sum of consecutive naturals, for example, 451156101 + ... + 451161046.

It is an arithmetic number, because the mean of its divisors is an integer number (558083156038).

Almost surely, 2^{2231430304531} is an apocalyptic number.

2231430304531 is a deficient number, since it is larger than the sum of its proper divisors (902319621).

2231430304531 is an equidigital number, since it uses as much as digits as its factorization.

2231430304531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902319620.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 2231430304531 its reverse (1354030341322), we get a palindrome (3585460645853).

The spelling of 2231430304531 in words is "two trillion, two hundred thirty-one billion, four hundred thirty million, three hundred four thousand, five hundred thirty-one".