30313212131 has 4 divisors (see below), whose sum is σ = 30314143872. Its totient is φ = 30312280392.

The previous prime is 30313212119. The next prime is 30313212151. The reversal of 30313212131 is 13121231303.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30313212131 - 2¹⁴ = 30313195747 is a prime.

It is a super-2 number, since 2×30313212131² (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 (30313212151) 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, 415235 + ... + 482748.

It is an arithmetic number, because the mean of its divisors is an integer number (7578535968).

Almost surely, 2^30313212131 is an apocalyptic number.

30313212131 is a deficient number, since it is larger than the sum of its proper divisors (931741).

30313212131 is an equidigital number, since it uses as much as digits as its factorization.

30313212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931740.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 30313212131 its reverse (13121231303), we get a palindrome (43434443434).

The spelling of 30313212131 in words is "thirty billion, three hundred thirteen million, two hundred twelve thousand, one hundred thirty-one".