30769831 has 2 divisors, whose sum is σ = 30769832. Its totient is φ = 30769830.

The previous prime is 30769807. The next prime is 30769853. The reversal of 30769831 is 13896703.

It is a strong prime.

It is an emirp because it is prime and its reverse (13896703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30769831 - 2⁵ = 30769799 is a prime.

It is a super-2 number, since 2×30769831² = 1893564999537122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30769801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15384915 + 15384916.

It is an arithmetic number, because the mean of its divisors is an integer number (15384916).

Almost surely, 2^30769831 is an apocalyptic number.

30769831 is a deficient number, since it is larger than the sum of its proper divisors (1).

30769831 is an equidigital number, since it uses as much as digits as its factorization.

30769831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 30769831 is about 5547.0560660588. The cubic root of 30769831 is about 313.3586616264.

The spelling of 30769831 in words is "thirty million, seven hundred sixty-nine thousand, eight hundred thirty-one".