206314631 has 4 divisors (see below), whose sum is σ = 210704352. Its totient is φ = 201924912.

The previous prime is 206314621. The next prime is 206314649. The reversal of 206314631 is 136413602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206314631 is a prime.

It is a super-2 number, since 2×206314631² = 85131453929332322, which contains 22 as substring.

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 206314631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206314621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194790 + ... + 2194883.

It is an arithmetic number, because the mean of its divisors is an integer number (52676088).

Almost surely, 2^206314631 is an apocalyptic number.

206314631 is a deficient number, since it is larger than the sum of its proper divisors (4389721).

206314631 is an equidigital number, since it uses as much as digits as its factorization.

206314631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4389720.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 206314631 is about 14363.6566026900. The cubic root of 206314631 is about 590.8945837292.

The spelling of 206314631 in words is "two hundred six million, three hundred fourteen thousand, six hundred thirty-one".