31021230013 has 8 divisors (see below), whose sum is σ = 32371767936. Its totient is φ = 29670841200.

The previous prime is 31021229999. The next prime is 31021230041. The reversal of 31021230013 is 31003212013.

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

It is a cyclic number.

It is not a de Polignac number, because 31021230013 - 2²¹ = 31019132861 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 (31021230613) 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, 689848 + ... + 733438.

It is an arithmetic number, because the mean of its divisors is an integer number (4046470992).

Almost surely, 2^31021230013 is an apocalyptic number.

It is an amenable number.

31021230013 is a deficient number, since it is larger than the sum of its proper divisors (1350537923).

31021230013 is a wasteful number, since it uses less digits than its factorization.

31021230013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74555.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31021230013 its reverse (31003212013), we get a palindrome (62024442026).

The spelling of 31021230013 in words is "thirty-one billion, twenty-one million, two hundred thirty thousand, thirteen".