78433031 has 2 divisors, whose sum is σ = 78433032. Its totient is φ = 78433030.

The previous prime is 78433027. The next prime is 78433039. The reversal of 78433031 is 13033487.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78433031 - 2² = 78433027 is a prime.

It is a super-2 number, since 2×78433031² = 12303480703693922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78432985 and 78433003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78433039) 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, 39216515 + 39216516.

It is an arithmetic number, because the mean of its divisors is an integer number (39216516).

Almost surely, 2^78433031 is an apocalyptic number.

78433031 is a deficient number, since it is larger than the sum of its proper divisors (1).

78433031 is an equidigital number, since it uses as much as digits as its factorization.

78433031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 78433031 is about 8856.2424876468. The cubic root of 78433031 is about 428.0550905154.

The spelling of 78433031 in words is "seventy-eight million, four hundred thirty-three thousand, thirty-one".