30131132231 has 4 divisors (see below), whose sum is σ = 31903551792. Its totient is φ = 28358712672.

The previous prime is 30131132219. The next prime is 30131132243. The reversal of 30131132231 is 13223113103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13223113103 = 23 ⋅574917961.

It is an interprime number because it is at equal distance from previous prime (30131132219) and next prime (30131132243).

It is a cyclic number.

It is not a de Polignac number, because 30131132231 - 2⁶ = 30131132167 is a prime.

It is a super-2 number, since 2×30131132231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131132201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886209755 + ... + 886209788.

It is an arithmetic number, because the mean of its divisors is an integer number (7975887948).

Almost surely, 2^30131132231 is an apocalyptic number.

30131132231 is a deficient number, since it is larger than the sum of its proper divisors (1772419561).

30131132231 is a wasteful number, since it uses less digits than its factorization.

30131132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772419560.

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

Adding to 30131132231 its reverse (13223113103), we get a palindrome (43354245334).

The spelling of 30131132231 in words is "thirty billion, one hundred thirty-one million, one hundred thirty-two thousand, two hundred thirty-one".