30431244131 has 4 divisors (see below), whose sum is σ = 30434510592. Its totient is φ = 30427977672.

The previous prime is 30431244127. The next prime is 30431244161. The reversal of 30431244131 is 13144213403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13144213403 = 223 ⋅58942661.

It is a cyclic number.

It is not a de Polignac number, because 30431244131 - 2² = 30431244127 is a prime.

It is a super-2 number, since 2×30431244131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30431244131.

It is not an unprimeable number, because it can be changed into a prime (30431244121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619216 + ... + 1637901.

It is an arithmetic number, because the mean of its divisors is an integer number (7608627648).

Almost surely, 2^30431244131 is an apocalyptic number.

30431244131 is a deficient number, since it is larger than the sum of its proper divisors (3266461).

30431244131 is an equidigital number, since it uses as much as digits as its factorization.

30431244131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266460.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 30431244131 its reverse (13144213403), we get a palindrome (43575457534).

The spelling of 30431244131 in words is "thirty billion, four hundred thirty-one million, two hundred forty-four thousand, one hundred thirty-one".