31440403211121 has 12 divisors (see below), whose sum is σ = 46183643135760. Its totient is φ = 20605010013720.

The previous prime is 31440403211053. The next prime is 31440403211149. The reversal of 31440403211121 is 12111230404413.

It is a happy number.

31440403211121 is a `hidden beast` number, since 3 + 1 + 4 + 40 + 403 + 211 + 1 + 2 + 1 = 666.

It is not a de Polignac number, because 31440403211121 - 2²⁶ = 31440336102257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31440403261121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29604898915 + ... + 29604899976.

It is an arithmetic number, because the mean of its divisors is an integer number (3848636927980).

Almost surely, 2^{31440403211121} is an apocalyptic number.

It is an amenable number.

31440403211121 is a deficient number, since it is larger than the sum of its proper divisors (14743239924639).

31440403211121 is a wasteful number, since it uses less digits than its factorization.

31440403211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59209798956 (or 59209798953 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 31440403211121 its reverse (12111230404413), we get a palindrome (43551633615534).

The spelling of 31440403211121 in words is "thirty-one trillion, four hundred forty billion, four hundred three million, two hundred eleven thousand, one hundred twenty-one".