1231120001313 has 24 divisors (see below), whose sum is σ = 1833622592256. Its totient is φ = 795382740000.

The previous prime is 1231120001233. The next prime is 1231120001327. The reversal of 1231120001313 is 3131000211321.

1231120001313 is a `hidden beast` number, since 1 + 231 + 120 + 0 + 0 + 1 + 313 = 666.

It is not a de Polignac number, because 1231120001313 - 2¹⁶ = 1231119935777 is a prime.

It is a super-3 number, since 3×1231120001313³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1231120001333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7281073 + ... + 7448238.

It is an arithmetic number, because the mean of its divisors is an integer number (76400941344).

Almost surely, 2^{1231120001313} is an apocalyptic number.

It is an amenable number.

1231120001313 is a deficient number, since it is larger than the sum of its proper divisors (602502590943).

1231120001313 is a wasteful number, since it uses less digits than its factorization.

1231120001313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14729605 (or 14729602 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1231120001313 its reverse (3131000211321), we get a palindrome (4362120212634).

The spelling of 1231120001313 in words is "one trillion, two hundred thirty-one billion, one hundred twenty million, one thousand, three hundred thirteen".