1200120031313 has 24 divisors (see below), whose sum is σ = 1409643972000. Its totient is φ = 1018670952768.

The previous prime is 1200120031309. The next prime is 1200120031321. The reversal of 1200120031313 is 3131300210021.

It is not a de Polignac number, because 1200120031313 - 2² = 1200120031309 is a prime.

It is a super-2 number, since 2×1200120031313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200120031291 and 1200120031300.

It is not an unprimeable number, because it can be changed into a prime (1200120031333) 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, 14108453 + ... + 14193261.

It is an arithmetic number, because the mean of its divisors is an integer number (58735165500).

Almost surely, 2^{1200120031313} is an apocalyptic number.

It is an amenable number.

1200120031313 is a deficient number, since it is larger than the sum of its proper divisors (209523940687).

1200120031313 is a wasteful number, since it uses less digits than its factorization.

1200120031313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87629 (or 87622 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1200120031313 its reverse (3131300210021), we get a palindrome (4331420241334).

The spelling of 1200120031313 in words is "one trillion, two hundred billion, one hundred twenty million, thirty-one thousand, three hundred thirteen".