78311043 has 10 divisors (see below), whose sum is σ = 116983284. Its totient is φ = 52207308.

The previous prime is 78311039. The next prime is 78311089. The reversal of 78311043 is 34011387.

It is not a de Polignac number, because 78311043 - 2² = 78311039 is a prime.

It is a super-2 number, since 2×78311043² = 12265238911495698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 78310998 and 78311016.

It is not an unprimeable number, because it can be changed into a prime (78311033) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 483321 + ... + 483482.

Almost surely, 2^78311043 is an apocalyptic number.

78311043 is a deficient number, since it is larger than the sum of its proper divisors (38672241).

78311043 is an equidigital number, since it uses as much as digits as its factorization.

78311043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966815 (or 966806 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 78311043 is about 8849.3526881914. The cubic root of 78311043 is about 427.8330553231.

The spelling of 78311043 in words is "seventy-eight million, three hundred eleven thousand, forty-three".