1231422144031 has 2 divisors, whose sum is σ = 1231422144032. Its totient is φ = 1231422144030.

The previous prime is 1231422144023. The next prime is 1231422144047. The reversal of 1231422144031 is 1304412241321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231422144031 - 2³ = 1231422144023 is a prime.

It is a super-2 number, since 2×1231422144031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231422144061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615711072015 + 615711072016.

It is an arithmetic number, because the mean of its divisors is an integer number (615711072016).

Almost surely, 2^{1231422144031} is an apocalyptic number.

1231422144031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231422144031 is an equidigital number, since it uses as much as digits as its factorization.

1231422144031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1231422144031 its reverse (1304412241321), we get a palindrome (2535834385352).

The spelling of 1231422144031 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-two million, one hundred forty-four thousand, thirty-one".