920394031 has 2 divisors, whose sum is σ = 920394032. Its totient is φ = 920394030.

The previous prime is 920394017. The next prime is 920394043. The reversal of 920394031 is 130493029.

It is a strong prime.

It is an emirp because it is prime and its reverse (130493029) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920394031 is a prime.

It is a super-3 number, since 3×920394031³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 920393984 and 920394002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920394071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460197015 + 460197016.

It is an arithmetic number, because the mean of its divisors is an integer number (460197016).

Almost surely, 2^920394031 is an apocalyptic number.

920394031 is a deficient number, since it is larger than the sum of its proper divisors (1).

920394031 is an equidigital number, since it uses as much as digits as its factorization.

920394031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 920394031 is about 30337.9964895509. The cubic root of 920394031 is about 972.7276579033.

The spelling of 920394031 in words is "nine hundred twenty million, three hundred ninety-four thousand, thirty-one".