30340991231 has 2 divisors, whose sum is σ = 30340991232. Its totient is φ = 30340991230.

The previous prime is 30340991209. The next prime is 30340991269. The reversal of 30340991231 is 13219904303.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30340991231 - 2²⁶ = 30273882367 is a prime.

It is a super-2 number, since 2×30340991231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30340991191 and 30340991200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30340991201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15170495615 + 15170495616.

It is an arithmetic number, because the mean of its divisors is an integer number (15170495616).

Almost surely, 2^30340991231 is an apocalyptic number.

30340991231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30340991231 is an equidigital number, since it uses as much as digits as its factorization.

30340991231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 30340991231 in words is "thirty billion, three hundred forty million, nine hundred ninety-one thousand, two hundred thirty-one".