30131313131 has 4 divisors (see below), whose sum is σ = 30143629152. Its totient is φ = 30118997112.

The previous prime is 30131313119. The next prime is 30131313151. The reversal of 30131313131 is 13131313103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13131313103 = 1277 ⋅10282939.

It is a cyclic number.

It is not a de Polignac number, because 30131313131 - 2¹⁸ = 30131050987 is a prime.

It is a super-2 number, since 2×30131313131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30131313101) 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, 6154340 + ... + 6159233.

It is an arithmetic number, because the mean of its divisors is an integer number (7535907288).

Almost surely, 2^30131313131 is an apocalyptic number.

30131313131 is a deficient number, since it is larger than the sum of its proper divisors (12316021).

30131313131 is a wasteful number, since it uses less digits than its factorization.

30131313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12316020.

The product of its (nonzero) digits is 243, while the sum is 20.

Adding to 30131313131 its reverse (13131313103), we get a palindrome (43262626234).

The spelling of 30131313131 in words is "thirty billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-one".