1201232323131 has 32 divisors (see below), whose sum is σ = 1734135532800. Its totient is φ = 737047382400.

The previous prime is 1201232323129. The next prime is 1201232323157. The reversal of 1201232323131 is 1313232321021.

It is not a de Polignac number, because 1201232323131 - 2¹ = 1201232323129 is a prime.

It is a super-2 number, since 2×1201232323131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1201232323121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957681 + ... + 1821981.

It is an arithmetic number, because the mean of its divisors is an integer number (54191735400).

Almost surely, 2^{1201232323131} is an apocalyptic number.

1201232323131 is a deficient number, since it is larger than the sum of its proper divisors (532903209669).

1201232323131 is a wasteful number, since it uses less digits than its factorization.

1201232323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865019.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1201232323131 its reverse (1313232321021), we get a palindrome (2514464644152).

The spelling of 1201232323131 in words is "one trillion, two hundred one billion, two hundred thirty-two million, three hundred twenty-three thousand, one hundred thirty-one".