30755521031 has 6 divisors (see below), whose sum is σ = 30817040280. Its totient is φ = 30694124348.

The previous prime is 30755521021. The next prime is 30755521051. The reversal of 30755521031 is 13012555703.

It is not a de Polignac number, because 30755521031 - 2⁶ = 30755520967 is a prime.

It is a super-3 number, since 3×30755521031³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30755521001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 192230 + ... + 313788.

It is an arithmetic number, because the mean of its divisors is an integer number (5136173380).

Almost surely, 2^30755521031 is an apocalyptic number.

30755521031 is a deficient number, since it is larger than the sum of its proper divisors (61519249).

30755521031 is an frugal number, since it uses more digits than its factorization.

30755521031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122565 (or 122062 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The spelling of 30755521031 in words is "thirty billion, seven hundred fifty-five million, five hundred twenty-one thousand, thirty-one".