7240667731 has 16 divisors (see below), whose sum is σ = 8039985408. Its totient is φ = 6465175200.

The previous prime is 7240667671. The next prime is 7240667741. The reversal of 7240667731 is 1377660427.

7240667731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7240667731 - 2¹⁵ = 7240634963 is a prime.

It is a super-2 number, since 2×7240667731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7240667741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480396 + ... + 495238.

It is an arithmetic number, because the mean of its divisors is an integer number (502499088).

Almost surely, 2^7240667731 is an apocalyptic number.

7240667731 is a deficient number, since it is larger than the sum of its proper divisors (799317677).

7240667731 is a wasteful number, since it uses less digits than its factorization.

7240667731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15642.

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 7240667731 is about 85092.1132126826. The cubic root of 7240667731 is about 1934.6075255342.

The spelling of 7240667731 in words is "seven billion, two hundred forty million, six hundred sixty-seven thousand, seven hundred thirty-one".