1670304631 has 4 divisors (see below), whose sum is σ = 1680943672. Its totient is φ = 1659665592.

The previous prime is 1670304613. The next prime is 1670304637. The reversal of 1670304631 is 1364030761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1670304631 - 2¹¹ = 1670302583 is a prime.

It is a super-2 number, since 2×1670304631² = 5579835120680092322, 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 = 1670304593 and 1670304602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670304637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5319285 + ... + 5319598.

It is an arithmetic number, because the mean of its divisors is an integer number (420235918).

Almost surely, 2^1670304631 is an apocalyptic number.

1670304631 is a deficient number, since it is larger than the sum of its proper divisors (10639041).

1670304631 is a wasteful number, since it uses less digits than its factorization.

1670304631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639040.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1670304631 is about 40869.3605406299. The cubic root of 1670304631 is about 1186.4931313258.

The spelling of 1670304631 in words is "one billion, six hundred seventy million, three hundred four thousand, six hundred thirty-one".