683949031 has 2 divisors, whose sum is σ = 683949032. Its totient is φ = 683949030.

The previous prime is 683949017. The next prime is 683949043. The reversal of 683949031 is 130949386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 683949031 - 2¹¹ = 683946983 is a prime.

It is a super-2 number, since 2×683949031² = 935572554011677922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683949011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341974515 + 341974516.

It is an arithmetic number, because the mean of its divisors is an integer number (341974516).

Almost surely, 2^683949031 is an apocalyptic number.

683949031 is a deficient number, since it is larger than the sum of its proper divisors (1).

683949031 is an equidigital number, since it uses as much as digits as its factorization.

683949031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 683949031 is about 26152.4192188792. The cubic root of 683949031 is about 881.0649259018.

The spelling of 683949031 in words is "six hundred eighty-three million, nine hundred forty-nine thousand, thirty-one".