30820131245 has 8 divisors (see below), whose sum is σ = 37005509016. Its totient is φ = 24641870656.

The previous prime is 30820131229. The next prime is 30820131271. The reversal of 30820131245 is 54213102803.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5246684356 + 25573446889 = 72434^2 + 159917^2 .

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 30820131245 - 2⁴ = 30820131229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1769762 + ... + 1787091.

It is an arithmetic number, because the mean of its divisors is an integer number (4625688627).

Almost surely, 2^30820131245 is an apocalyptic number.

It is an amenable number.

30820131245 is a deficient number, since it is larger than the sum of its proper divisors (6185377771).

30820131245 is a wasteful number, since it uses less digits than its factorization.

30820131245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558591.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 30820131245 in words is "thirty billion, eight hundred twenty million, one hundred thirty-one thousand, two hundred forty-five".