30313312131 has 4 divisors (see below), whose sum is σ = 40417749512. Its totient is φ = 20208874752.

The previous prime is 30313312111. The next prime is 30313312151. The reversal of 30313312131 is 13121331303.

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

It is an interprime number because it is at equal distance from previous prime (30313312111) and next prime (30313312151).

It is not a de Polignac number, because 30313312131 - 2¹⁰ = 30313311107 is a prime.

It is a super-2 number, since 2×30313312131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30313312098 and 30313312107.

It is not an unprimeable number, because it can be changed into a prime (30313312111) 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, 5052218686 + ... + 5052218691.

It is an arithmetic number, because the mean of its divisors is an integer number (10104437378).

Almost surely, 2^30313312131 is an apocalyptic number.

30313312131 is a deficient number, since it is larger than the sum of its proper divisors (10104437381).

30313312131 is a wasteful number, since it uses less digits than its factorization.

30313312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10104437380.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 30313312131 its reverse (13121331303), we get a palindrome (43434643434).

The spelling of 30313312131 in words is "thirty billion, three hundred thirteen million, three hundred twelve thousand, one hundred thirty-one".