31030030013 has 8 divisors (see below), whose sum is σ = 31163244000. Its totient is φ = 30896969040.

The previous prime is 31030029973. The next prime is 31030030019. The reversal of 31030030013 is 31003003013.

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-31030030013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31030030013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030030019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377858 + ... + 452588.

It is an arithmetic number, because the mean of its divisors is an integer number (3895405500).

Almost surely, 2^31030030013 is an apocalyptic number.

It is an amenable number.

31030030013 is a deficient number, since it is larger than the sum of its proper divisors (133213987).

31030030013 is a wasteful number, since it uses less digits than its factorization.

31030030013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76507.

The product of its (nonzero) digits is 81, while the sum is 14.

Adding to 31030030013 its reverse (31003003013), we get a palindrome (62033033026).

The spelling of 31030030013 in words is "thirty-one billion, thirty million, thirty thousand, thirteen".