2061698231 has 4 divisors (see below), whose sum is σ = 2062132464. Its totient is φ = 2061264000.

The previous prime is 2061698209. The next prime is 2061698321. The reversal of 2061698231 is 1328961602.

It is a happy number.

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 2061698231 - 2²² = 2057503927 is a prime.

It is a super-2 number, since 2×2061698231² = 8501199191417058722, 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 (2061698731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209915 + ... + 219516.

It is an arithmetic number, because the mean of its divisors is an integer number (515533116).

Almost surely, 2^2061698231 is an apocalyptic number.

2061698231 is a deficient number, since it is larger than the sum of its proper divisors (434233).

2061698231 is an equidigital number, since it uses as much as digits as its factorization.

2061698231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434232.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2061698231 is about 45405.9272672632. The cubic root of 2061698231 is about 1272.7458787418.

The spelling of 2061698231 in words is "two billion, sixty-one million, six hundred ninety-eight thousand, two hundred thirty-one".