30938087309381 has 32 divisors (see below), whose sum is σ = 36107897430528. Its totient is φ = 25961228006400.

The previous prime is 30938087309377. The next prime is 30938087309387. The reversal of 30938087309381 is 18390378083903.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30938087309381 - 2² = 30938087309377 is a prime.

It is a super-2 number, since 2×30938087309381² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30938087309387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 794629991 + ... + 794668923.

It is an arithmetic number, because the mean of its divisors is an integer number (1128371794704).

Almost surely, 2^{30938087309381} is an apocalyptic number.

It is an amenable number.

30938087309381 is a deficient number, since it is larger than the sum of its proper divisors (5169810121147).

30938087309381 is a wasteful number, since it uses less digits than its factorization.

30938087309381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50501.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 30938087309381 in words is "thirty trillion, nine hundred thirty-eight billion, eighty-seven million, three hundred nine thousand, three hundred eighty-one".