30771677381 has 4 divisors (see below), whose sum is σ = 30791883552. Its totient is φ = 30751471212.

The previous prime is 30771677359. The next prime is 30771677413. The reversal of 30771677381 is 18377617703.

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 30771677381 - 2⁶ = 30771677317 is a prime.

It is a super-2 number, since 2×30771677381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30771677311) 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, 10100801 + ... + 10103846.

It is an arithmetic number, because the mean of its divisors is an integer number (7697970888).

Almost surely, 2^30771677381 is an apocalyptic number.

It is an amenable number.

30771677381 is a deficient number, since it is larger than the sum of its proper divisors (20206171).

30771677381 is a wasteful number, since it uses less digits than its factorization.

30771677381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20206170.

The product of its (nonzero) digits is 1037232, while the sum is 50.

The spelling of 30771677381 in words is "thirty billion, seven hundred seventy-one million, six hundred seventy-seven thousand, three hundred eighty-one".