70130321 has 16 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 64296960.

The previous prime is 70130303. The next prime is 70130327. The reversal of 70130321 is 12303107.

It is a cyclic number.

It is not a de Polignac number, because 70130321 - 2⁶ = 70130257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70130321.

It is not an unprimeable number, because it can be changed into a prime (70130327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116780 + ... + 117378.

It is an arithmetic number, because the mean of its divisors is an integer number (4762800).

Almost surely, 2^70130321 is an apocalyptic number.

70130321 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

70130321 is a deficient number, since it is larger than the sum of its proper divisors (6074479).

70130321 is a wasteful number, since it uses less digits than its factorization.

70130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 70130321 is about 8374.3848132266. The cubic root of 70130321 is about 412.3841285811.

Adding to 70130321 its reverse (12303107), we get a palindrome (82433428).

The spelling of 70130321 in words is "seventy million, one hundred thirty thousand, three hundred twenty-one".