31240210204213 has 16 divisors (see below), whose sum is σ = 31882701533760. Its totient is φ = 30601545158016.

The previous prime is 31240210204201. The next prime is 31240210204241. The reversal of 31240210204213 is 31240201204213.

It is a cyclic number.

It is not a de Polignac number, because 31240210204213 - 2¹⁷ = 31240210073141 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 (31240210204913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60839481 + ... + 61350817.

It is an arithmetic number, because the mean of its divisors is an integer number (1992668845860).

Almost surely, 2^{31240210204213} is an apocalyptic number.

It is an amenable number.

31240210204213 is a deficient number, since it is larger than the sum of its proper divisors (642491329547).

31240210204213 is a wasteful number, since it uses less digits than its factorization.

31240210204213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515076.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31240210204213 its reverse (31240201204213), we get a palindrome (62480411408426).

Subtracting from 31240210204213 its reverse (31240201204213), we obtain a square (9000000 = 3000²).

The spelling of 31240210204213 in words is "thirty-one trillion, two hundred forty billion, two hundred ten million, two hundred four thousand, two hundred thirteen".