1243144014431 has 16 divisors (see below), whose sum is σ = 1397009116800. Its totient is φ = 1096440364320.

The previous prime is 1243144014377. The next prime is 1243144014439. The reversal of 1243144014431 is 1344104413421.

It is a cyclic number.

It is not a de Polignac number, because 1243144014431 - 2²² = 1243139820127 is a prime.

It is a super-2 number, since 2×1243144014431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243144014439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8749025 + ... + 8889978.

It is an arithmetic number, because the mean of its divisors is an integer number (87313069800).

Almost surely, 2^{1243144014431} is an apocalyptic number.

1243144014431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1243144014431 is a deficient number, since it is larger than the sum of its proper divisors (153865102369).

1243144014431 is a wasteful number, since it uses less digits than its factorization.

1243144014431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17639206.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 1243144014431 its reverse (1344104413421), we get a palindrome (2587248427852).

The spelling of 1243144014431 in words is "one trillion, two hundred forty-three billion, one hundred forty-four million, fourteen thousand, four hundred thirty-one".