70122731 has 8 divisors (see below), whose sum is σ = 81845760. Its totient is φ = 58826088.

The previous prime is 70122721. The next prime is 70122737. The reversal of 70122731 is 13722107.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70122731 is a prime.

It is a super-2 number, since 2×70122731² = 9834394805796722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70122697 and 70122706.

It is not an unprimeable number, because it can be changed into a prime (70122737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106241 + ... + 106898.

It is an arithmetic number, because the mean of its divisors is an integer number (10230720).

Almost surely, 2^70122731 is an apocalyptic number.

70122731 is a deficient number, since it is larger than the sum of its proper divisors (11723029).

70122731 is a wasteful number, since it uses less digits than its factorization.

70122731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213193.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 70122731 is about 8373.9316333488. The cubic root of 70122731 is about 412.3692510008.

Adding to 70122731 its reverse (13722107), we get a palindrome (83844838).

It can be divided in two parts, 701 and 22731, that added together give a palindrome (23432).

The spelling of 70122731 in words is "seventy million, one hundred twenty-two thousand, seven hundred thirty-one".