2213740831 has 4 divisors (see below), whose sum is σ = 2219907600. Its totient is φ = 2207574064.

The previous prime is 2213740819. The next prime is 2213740849. The reversal of 2213740831 is 1380473122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2213740831 is a prime.

It is a super-2 number, since 2×2213740831² = 9801296933673141122, 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 = 2213740793 and 2213740802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213740801) 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, 3082846 + ... + 3083563.

It is an arithmetic number, because the mean of its divisors is an integer number (554976900).

Almost surely, 2^2213740831 is an apocalyptic number.

2213740831 is a deficient number, since it is larger than the sum of its proper divisors (6166769).

2213740831 is an equidigital number, since it uses as much as digits as its factorization.

2213740831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6166768.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2213740831 is about 47050.4073414886. The cubic root of 2213740831 is about 1303.2935876068.

It can be divided in two parts, 2213 and 740831, that added together give a square (743044 = 862²).

The spelling of 2213740831 in words is "two billion, two hundred thirteen million, seven hundred forty thousand, eight hundred thirty-one".