1213407275523 has 32 divisors (see below), whose sum is σ = 1744932806400. Its totient is φ = 747513100800.

The previous prime is 1213407275467. The next prime is 1213407275551. The reversal of 1213407275523 is 3255727043121.

It is not a de Polignac number, because 1213407275523 - 2⁶ = 1213407275459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213407275323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11560308 + ... + 11664798.

It is an arithmetic number, because the mean of its divisors is an integer number (54529150200).

Almost surely, 2^{1213407275523} is an apocalyptic number.

1213407275523 is a deficient number, since it is larger than the sum of its proper divisors (531525530877).

1213407275523 is a wasteful number, since it uses less digits than its factorization.

1213407275523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109523.

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 1213407275523 in words is "one trillion, two hundred thirteen billion, four hundred seven million, two hundred seventy-five thousand, five hundred twenty-three".