16970731 has 2 divisors, whose sum is σ = 16970732. Its totient is φ = 16970730.

The previous prime is 16970719. The next prime is 16970773. The reversal of 16970731 is 13707961.

It is a happy number.

16970731 is nontrivially palindromic in base 15.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16970731 is a prime.

It is a super-2 number, since 2×16970731² = 576011421348722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16970791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8485365 + 8485366.

It is an arithmetic number, because the mean of its divisors is an integer number (8485366).

Almost surely, 2^16970731 is an apocalyptic number.

16970731 is a deficient number, since it is larger than the sum of its proper divisors (1).

16970731 is an equidigital number, since it uses as much as digits as its factorization.

16970731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 16970731 is about 4119.5547089461. The cubic root of 16970731 is about 256.9805079414.

The spelling of 16970731 in words is "sixteen million, nine hundred seventy thousand, seven hundred thirty-one".