1231502542027 has 2 divisors, whose sum is σ = 1231502542028. Its totient is φ = 1231502542026.

The previous prime is 1231502541979. The next prime is 1231502542087. The reversal of 1231502542027 is 7202452051321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231502542027 is a prime.

It is a super-2 number, since 2×1231502542027² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231502541983 and 1231502542001.

It is not a weakly prime, because it can be changed into another prime (1231502542087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615751271013 + 615751271014.

It is an arithmetic number, because the mean of its divisors is an integer number (615751271014).

Almost surely, 2^{1231502542027} is an apocalyptic number.

1231502542027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231502542027 is an equidigital number, since it uses as much as digits as its factorization.

1231502542027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 1231502542027 its reverse (7202452051321), we get a palindrome (8433954593348).

The spelling of 1231502542027 in words is "one trillion, two hundred thirty-one billion, five hundred two million, five hundred forty-two thousand, twenty-seven".