31201010213 has 4 divisors (see below), whose sum is σ = 31322415180. Its totient is φ = 31079605248.

The previous prime is 31201010149. The next prime is 31201010219.

31201010213 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26016722209 + 5184288004 = 161297^2 + 72002^2 .

It is a cyclic number.

It is not a de Polignac number, because 31201010213 - 2⁶ = 31201010149 is a prime.

It is a super-3 number, since 3×31201010213³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201010219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60702098 + ... + 60702611.

It is an arithmetic number, because the mean of its divisors is an integer number (7830603795).

Almost surely, 2^31201010213 is an apocalyptic number.

It is an amenable number.

31201010213 is a deficient number, since it is larger than the sum of its proper divisors (121404967).

31201010213 is a wasteful number, since it uses less digits than its factorization.

31201010213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121404966.

The product of its (nonzero) digits is 36, while the sum is 14.

It can be divided in two parts, 312010 and 10213, that added together give a palindrome (322223).

The spelling of 31201010213 in words is "thirty-one billion, two hundred one million, ten thousand, two hundred thirteen".