1201233523523 has 16 divisors (see below), whose sum is σ = 1380950836992. Its totient is φ = 1034208780000.

The previous prime is 1201233523519. The next prime is 1201233523541. The reversal of 1201233523523 is 3253253321021.

It is not a de Polignac number, because 1201233523523 - 2² = 1201233523519 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 1201233523523.

It is not an unprimeable number, because it can be changed into a prime (1201233523573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23479193 + ... + 23530298.

It is an arithmetic number, because the mean of its divisors is an integer number (86309427312).

Almost surely, 2^{1201233523523} is an apocalyptic number.

1201233523523 is a deficient number, since it is larger than the sum of its proper divisors (179717313469).

1201233523523 is a wasteful number, since it uses less digits than its factorization.

1201233523523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47009626.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 1201233523523 its reverse (3253253321021), we get a palindrome (4454486844544).

The spelling of 1201233523523 in words is "one trillion, two hundred one billion, two hundred thirty-three million, five hundred twenty-three thousand, five hundred twenty-three".