2942831 has 4 divisors (see below), whose sum is σ = 2948064. Its totient is φ = 2937600.

The previous prime is 2942809. The next prime is 2942843. The reversal of 2942831 is 1382492.

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 2942831 - 2⁶ = 2942767 is a prime.

It is a super-2 number, since 2×2942831² = 17320508589122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2942794 and 2942803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2942881) 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, 1655 + ... + 2936.

It is an arithmetic number, because the mean of its divisors is an integer number (737016).

2^2942831 is an apocalyptic number.

2942831 is a deficient number, since it is larger than the sum of its proper divisors (5233).

2942831 is an equidigital number, since it uses as much as digits as its factorization.

2942831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232.

The product of its digits is 3456, while the sum is 29.

The square root of 2942831 is about 1715.4681576759. The cubic root of 2942831 is about 143.3029422977.

It can be divided in two parts, 2942 and 831, that added together give a palindrome (3773).

The spelling of 2942831 in words is "two million, nine hundred forty-two thousand, eight hundred thirty-one".