31242230513 has 8 divisors (see below), whose sum is σ = 33773412288. Its totient is φ = 28729324944.

The previous prime is 31242230501. The next prime is 31242230531. The reversal of 31242230513 is 31503224213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31242230513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31242230713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4565495 + ... + 4572332.

It is an arithmetic number, because the mean of its divisors is an integer number (4221676536).

Almost surely, 2^31242230513 is an apocalyptic number.

It is an amenable number.

31242230513 is a deficient number, since it is larger than the sum of its proper divisors (2531181775).

31242230513 is a wasteful number, since it uses less digits than its factorization.

31242230513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138103.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 31242230513 its reverse (31503224213), we get a palindrome (62745454726).

The spelling of 31242230513 in words is "thirty-one billion, two hundred forty-two million, two hundred thirty thousand, five hundred thirteen".