78063131 has 2 divisors, whose sum is σ = 78063132. Its totient is φ = 78063130.

The previous prime is 78063121. The next prime is 78063137. The reversal of 78063131 is 13136087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78063131 - 2¹⁰ = 78062107 is a prime.

It is a super-2 number, since 2×78063131² = 12187704843046322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 78063094 and 78063103.

It is not a weakly prime, because it can be changed into another prime (78063137) 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, 39031565 + 39031566.

It is an arithmetic number, because the mean of its divisors is an integer number (39031566).

Almost surely, 2^78063131 is an apocalyptic number.

78063131 is a deficient number, since it is larger than the sum of its proper divisors (1).

78063131 is an equidigital number, since it uses as much as digits as its factorization.

78063131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 78063131 is about 8835.3342325008. The cubic root of 78063131 is about 427.3811093986.

The spelling of 78063131 in words is "seventy-eight million, sixty-three thousand, one hundred thirty-one".