1212831528487 has 2 divisors, whose sum is σ = 1212831528488. Its totient is φ = 1212831528486.

The previous prime is 1212831528473. The next prime is 1212831528497. The reversal of 1212831528487 is 7848251382121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212831528487 is a prime.

It is a super-2 number, since 2×1212831528487² (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 (1212831528497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606415764243 + 606415764244.

It is an arithmetic number, because the mean of its divisors is an integer number (606415764244).

Almost surely, 2^{1212831528487} is an apocalyptic number.

1212831528487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212831528487 is an equidigital number, since it uses as much as digits as its factorization.

1212831528487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1720320, while the sum is 52.

The spelling of 1212831528487 in words is "one trillion, two hundred twelve billion, eight hundred thirty-one million, five hundred twenty-eight thousand, four hundred eighty-seven".