1213005201523 has 8 divisors (see below), whose sum is σ = 1244271163392. Its totient is φ = 1181966628936.

The previous prime is 1213005201467. The next prime is 1213005201571. The reversal of 1213005201523 is 3251025003121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213005201523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213005201223) 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, 56836515 + ... + 56857852.

It is an arithmetic number, because the mean of its divisors is an integer number (155533895424).

Almost surely, 2^{1213005201523} is an apocalyptic number.

1213005201523 is a deficient number, since it is larger than the sum of its proper divisors (31265961869).

1213005201523 is a wasteful number, since it uses less digits than its factorization.

1213005201523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113694641.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 1213005201523 in words is "one trillion, two hundred thirteen billion, five million, two hundred one thousand, five hundred twenty-three".