208264631 has 8 divisors (see below), whose sum is σ = 219099600. Its totient is φ = 197673280.

The previous prime is 208264627. The next prime is 208264649. The reversal of 208264631 is 136462802.

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

It is not a de Polignac number, because 208264631 - 2² = 208264627 is a prime.

It is a super-2 number, since 2×208264631² = 86748313051132322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208264691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59150 + ... + 62571.

It is an arithmetic number, because the mean of its divisors is an integer number (27387450).

Almost surely, 2^208264631 is an apocalyptic number.

208264631 is a deficient number, since it is larger than the sum of its proper divisors (10834969).

208264631 is a wasteful number, since it uses less digits than its factorization.

208264631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121809.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 208264631 is about 14431.3766148625. The cubic root of 208264631 is about 592.7503790854.

The spelling of 208264631 in words is "two hundred eight million, two hundred sixty-four thousand, six hundred thirty-one".