201696251693831 has 4 divisors (see below), whose sum is σ = 208202582393664. Its totient is φ = 195189920994000.

The previous prime is 201696251693813. The next prime is 201696251693843. The reversal of 201696251693831 is 138396152696102.

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 201696251693831 - 2¹⁰ = 201696251692807 is a prime.

It is a super-2 number, since 2×201696251693831² (a number of 29 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 (201696251693851) 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, 3253165349870 + ... + 3253165349931.

It is an arithmetic number, because the mean of its divisors is an integer number (52050645598416).

Almost surely, 2^{201696251693831} is an apocalyptic number.

201696251693831 is a deficient number, since it is larger than the sum of its proper divisors (6506330699833).

201696251693831 is an equidigital number, since it uses as much as digits as its factorization.

201696251693831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6506330699832.

The product of its (nonzero) digits is 25194240, while the sum is 62.

The spelling of 201696251693831 in words is "two hundred one trillion, six hundred ninety-six billion, two hundred fifty-one million, six hundred ninety-three thousand, eight hundred thirty-one".