31240401201121 has 16 divisors (see below), whose sum is σ = 35935472117376. Its totient is φ = 26603926580736.

The previous prime is 31240401201109. The next prime is 31240401201127. The reversal of 31240401201121 is 12110210404213.

It is a cyclic number.

It is not a de Polignac number, because 31240401201121 - 2⁷ = 31240401200993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31240401201092 and 31240401201101.

It is not an unprimeable number, because it can be changed into a prime (31240401201127) 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, 22542736 + ... + 23888401.

It is an arithmetic number, because the mean of its divisors is an integer number (2245967007336).

Almost surely, 2^{31240401201121} is an apocalyptic number.

It is an amenable number.

31240401201121 is a deficient number, since it is larger than the sum of its proper divisors (4695070916255).

31240401201121 is a wasteful number, since it uses less digits than its factorization.

31240401201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46431768.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 31240401201121 its reverse (12110210404213), we get a palindrome (43350611605334).

The spelling of 31240401201121 in words is "thirty-one trillion, two hundred forty billion, four hundred one million, two hundred one thousand, one hundred twenty-one".