1212831528479 has 8 divisors (see below), whose sum is σ = 1351762694640. Its totient is φ = 1081410155136.

The previous prime is 1212831528473. The next prime is 1212831528487. The reversal of 1212831528479 is 9748251382121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212831528479 - 2³⁶ = 1144112051743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212831528479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212831528473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877447864 + ... + 1877448509.

It is an arithmetic number, because the mean of its divisors is an integer number (168970336830).

Almost surely, 2^{1212831528479} is an apocalyptic number.

1212831528479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1212831528479 is a deficient number, since it is larger than the sum of its proper divisors (138931166161).

1212831528479 is a wasteful number, since it uses less digits than its factorization.

1212831528479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754896409.

The product of its digits is 1935360, while the sum is 53.

The spelling of 1212831528479 in words is "one trillion, two hundred twelve billion, eight hundred thirty-one million, five hundred twenty-eight thousand, four hundred seventy-nine".