1231230441431 has 2 divisors, whose sum is σ = 1231230441432. Its totient is φ = 1231230441430.

The previous prime is 1231230441409. The next prime is 1231230441443. The reversal of 1231230441431 is 1341440321321.

It is a strong prime.

It is an emirp because it is prime and its reverse (1341440321321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231230441431 is a prime.

It is a super-2 number, since 2×1231230441431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231230441394 and 1231230441403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231230447431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615615220715 + 615615220716.

It is an arithmetic number, because the mean of its divisors is an integer number (615615220716).

Almost surely, 2^{1231230441431} is an apocalyptic number.

1231230441431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231230441431 is an equidigital number, since it uses as much as digits as its factorization.

1231230441431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 1231230441431 its reverse (1341440321321), we get a palindrome (2572670762752).

The spelling of 1231230441431 in words is "one trillion, two hundred thirty-one billion, two hundred thirty million, four hundred forty-one thousand, four hundred thirty-one".