71263013 has 2 divisors, whose sum is σ = 71263014. Its totient is φ = 71263012.

The previous prime is 71263007. The next prime is 71263019. The reversal of 71263013 is 31036217.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (71263007) and next prime (71263019).

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 332929 = 8422^2 + 577^2 .

It is a cyclic number.

It is not a de Polignac number, because 71263013 - 2⁶ = 71262949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71263013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71263019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35631506 + 35631507.

It is an arithmetic number, because the mean of its divisors is an integer number (35631507).

Almost surely, 2^71263013 is an apocalyptic number.

It is an amenable number.

71263013 is a deficient number, since it is larger than the sum of its proper divisors (1).

71263013 is an equidigital number, since it uses as much as digits as its factorization.

71263013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 71263013 is about 8441.7422964694. The cubic root of 71263013 is about 414.5924542144.

The spelling of 71263013 in words is "seventy-one million, two hundred sixty-three thousand, thirteen".