2235731 has 2 divisors, whose sum is σ = 2235732. Its totient is φ = 2235730.

The previous prime is 2235707. The next prime is 2235733. The reversal of 2235731 is 1375322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2235731 - 2¹⁰ = 2234707 is a prime.

It is a super-2 number, since 2×2235731² = 9996986208722, which contains 22 as substring.

Together with 2235733, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 3⁷ + 5⁵ + 7 + 3⁷ + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 2235697 and 2235706.

It is not a weakly prime, because it can be changed into another prime (2235733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1117865 + 1117866.

It is an arithmetic number, because the mean of its divisors is an integer number (1117866).

2^2235731 is an apocalyptic number.

2235731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2235731 is an equidigital number, since it uses as much as digits as its factorization.

2235731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 23.

The square root of 2235731 is about 1495.2361017578. The cubic root of 2235731 is about 130.7594794166.

It can be divided in two parts, 22 and 35731, that added together give a palindrome (35753).

The spelling of 2235731 in words is "two million, two hundred thirty-five thousand, seven hundred thirty-one".