31440431421101 has 16 divisors (see below), whose sum is σ = 33193692000000. Its totient is φ = 29697039844416.

The previous prime is 31440431421079. The next prime is 31440431421131. The reversal of 31440431421101 is 10112413404413.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31440431421101 - 2¹⁸ = 31440431158957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31440431421131) 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, 60740855 + ... + 61256283.

It is an arithmetic number, because the mean of its divisors is an integer number (2074605750000).

Almost surely, 2^{31440431421101} is an apocalyptic number.

It is an amenable number.

31440431421101 is a deficient number, since it is larger than the sum of its proper divisors (1753260578899).

31440431421101 is a wasteful number, since it uses less digits than its factorization.

31440431421101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524996.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 31440431421101 its reverse (10112413404413), we get a palindrome (41552844825514).

The spelling of 31440431421101 in words is "thirty-one trillion, four hundred forty billion, four hundred thirty-one million, four hundred twenty-one thousand, one hundred one".