206454001631 has 8 divisors (see below), whose sum is σ = 206662694784. Its totient is φ = 206245405080.

The previous prime is 206454001609. The next prime is 206454001639. The reversal of 206454001631 is 136100454602.

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

It is a cyclic number.

It is not a de Polignac number, because 206454001631 - 2¹⁸ = 206453739487 is a prime.

It is a super-2 number, since 2×206454001631² (a number of 23 digits) 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 (206454001639) 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, 4710440 + ... + 4754066.

It is an arithmetic number, because the mean of its divisors is an integer number (25832836848).

Almost surely, 2^206454001631 is an apocalyptic number.

206454001631 is a deficient number, since it is larger than the sum of its proper divisors (208693153).

206454001631 is a wasteful number, since it uses less digits than its factorization.

206454001631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48301.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 206454001631 in words is "two hundred six billion, four hundred fifty-four million, one thousand, six hundred thirty-one".