70312993 has 2 divisors, whose sum is σ = 70312994. Its totient is φ = 70312992.

The previous prime is 70312981. The next prime is 70313027. The reversal of 70312993 is 39921307.

It is an a-pointer prime, because the next prime (70313027) can be obtained adding 70312993 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42928704 + 27384289 = 6552^2 + 5233^2 .

It is a cyclic number.

It is not a de Polignac number, because 70312993 - 2⁹ = 70312481 is a prime.

It is not a weakly prime, because it can be changed into another prime (70312973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35156496 + 35156497.

It is an arithmetic number, because the mean of its divisors is an integer number (35156497).

Almost surely, 2^70312993 is an apocalyptic number.

It is an amenable number.

70312993 is a deficient number, since it is larger than the sum of its proper divisors (1).

70312993 is an equidigital number, since it uses as much as digits as its factorization.

70312993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 70312993 is about 8385.2843124130. The cubic root of 70312993 is about 412.7418707615.

The spelling of 70312993 in words is "seventy million, three hundred twelve thousand, nine hundred ninety-three".