2071543831 has 4 divisors (see below), whose sum is σ = 2367478672. Its totient is φ = 1775608992.

The previous prime is 2071543813. The next prime is 2071543841. The reversal of 2071543831 is 1383451702.

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 2071543831 - 2²¹ = 2069446679 is a prime.

It is a super-2 number, since 2×2071543831² = 8582587687508313122, 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 (2071543841) 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, 147967410 + ... + 147967423.

It is an arithmetic number, because the mean of its divisors is an integer number (591869668).

Almost surely, 2^2071543831 is an apocalyptic number.

2071543831 is a deficient number, since it is larger than the sum of its proper divisors (295934841).

2071543831 is an equidigital number, since it uses as much as digits as its factorization.

2071543831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295934840.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2071543831 is about 45514.2157023495. The cubic root of 2071543831 is about 1274.7686533474.

It can be divided in two parts, 20715 and 43831, that added together give a palindrome (64546).

The spelling of 2071543831 in words is "two billion, seventy-one million, five hundred forty-three thousand, eight hundred thirty-one".