31242024213 has 4 divisors (see below), whose sum is σ = 41656032288. Its totient is φ = 20828016140.

The previous prime is 31242024199. The next prime is 31242024241.

It is a happy number.

31242024213 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31242024213 - 2⁵ = 31242024181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31242024113) 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, 5207004033 + ... + 5207004038.

It is an arithmetic number, because the mean of its divisors is an integer number (10414008072).

Almost surely, 2^31242024213 is an apocalyptic number.

It is an amenable number.

31242024213 is a deficient number, since it is larger than the sum of its proper divisors (10414008075).

31242024213 is a wasteful number, since it uses less digits than its factorization.

31242024213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10414008074.

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 312420 and 24213, that added together give a palindrome (336633).

The spelling of 31242024213 in words is "thirty-one billion, two hundred forty-two million, twenty-four thousand, two hundred thirteen".