2231143221434 has 4 divisors (see below), whose sum is σ = 3346714832154. Its totient is φ = 1115571610716.

The previous prime is 2231143221409. The next prime is 2231143221443. The reversal of 2231143221434 is 4341223411322.

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 only one way, i.e., 2153248086025 + 77895135409 = 1467395^2 + 279097^2 .

It is a super-3 number, since 3×2231143221434³ (a number of 38 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231143221434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557785805357 + ... + 557785805360.

Almost surely, 2^{2231143221434} is an apocalyptic number.

2231143221434 is a deficient number, since it is larger than the sum of its proper divisors (1115571610720).

2231143221434 is a wasteful number, since it uses less digits than its factorization.

2231143221434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115571610719.

The product of its digits is 27648, while the sum is 32.

Adding to 2231143221434 its reverse (4341223411322), we get a palindrome (6572366632756).

The spelling of 2231143221434 in words is "two trillion, two hundred thirty-one billion, one hundred forty-three million, two hundred twenty-one thousand, four hundred thirty-four".