2106351291 has 8 divisors (see below), whose sum is σ = 3063783744. Its totient is φ = 1276576520.

The previous prime is 2106351283. The next prime is 2106351319. The reversal of 2106351291 is 1921536012.

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 2106351291 - 2³ = 2106351283 is a prime.

It is a super-2 number, since 2×2106351291² = 8873431522194733362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2106351491) 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, 31914381 + ... + 31914446.

It is an arithmetic number, because the mean of its divisors is an integer number (382972968).

Almost surely, 2^2106351291 is an apocalyptic number.

2106351291 is a deficient number, since it is larger than the sum of its proper divisors (957432453).

2106351291 is a wasteful number, since it uses less digits than its factorization.

2106351291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63828841.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 2106351291 is about 45895.0028979191. The cubic root of 2106351291 is about 1281.8688705632.

The spelling of 2106351291 in words is "two billion, one hundred six million, three hundred fifty-one thousand, two hundred ninety-one".