2240731 has 2 divisors, whose sum is σ = 2240732. Its totient is φ = 2240730.

The previous prime is 2240723. The next prime is 2240737. The reversal of 2240731 is 1370422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2240731 - 2³ = 2240723 is a prime.

It is a super-2 number, since 2×2240731² = 10041750828722, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2240699 and 2240708.

It is not a weakly prime, because it can be changed into another prime (2240737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120365 + 1120366.

It is an arithmetic number, because the mean of its divisors is an integer number (1120366).

2^2240731 is an apocalyptic number.

2240731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240731 is an equidigital number, since it uses as much as digits as its factorization.

2240731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2240731 is about 1496.9071447488. The cubic root of 2240731 is about 130.8568838921.

The spelling of 2240731 in words is "two million, two hundred forty thousand, seven hundred thirty-one".