141857831 has 4 divisors (see below), whose sum is σ = 141881664. Its totient is φ = 141834000.

The previous prime is 141857803. The next prime is 141857861. The reversal of 141857831 is 138758141.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 138758141 = 2111 ⋅65731.

It is a cyclic number.

It is not a de Polignac number, because 141857831 - 2¹⁰ = 141856807 is a prime.

It is a super-2 number, since 2×141857831² = 40247288432049122, 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 (141857861) 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, 5411 + ... + 17691.

It is an arithmetic number, because the mean of its divisors is an integer number (35470416).

Almost surely, 2^141857831 is an apocalyptic number.

141857831 is a deficient number, since it is larger than the sum of its proper divisors (23833).

141857831 is a wasteful number, since it uses less digits than its factorization.

141857831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23832.

The product of its digits is 26880, while the sum is 38.

The square root of 141857831 is about 11910.4085152441. The cubic root of 141857831 is about 521.5361760716.

The spelling of 141857831 in words is "one hundred forty-one million, eight hundred fifty-seven thousand, eight hundred thirty-one".