31401354211 has 4 divisors (see below), whose sum is σ = 33248492712. Its totient is φ = 29554215712.

The previous prime is 31401354209. The next prime is 31401354221. The reversal of 31401354211 is 11245310413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31401354211 - 2¹ = 31401354209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31401354221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923569225 + ... + 923569258.

It is an arithmetic number, because the mean of its divisors is an integer number (8312123178).

Almost surely, 2^31401354211 is an apocalyptic number.

31401354211 is a deficient number, since it is larger than the sum of its proper divisors (1847138501).

31401354211 is a wasteful number, since it uses less digits than its factorization.

31401354211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847138500.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 31401354211 its reverse (11245310413), we get a palindrome (42646664624).

The spelling of 31401354211 in words is "thirty-one billion, four hundred one million, three hundred fifty-four thousand, two hundred eleven".