7020731 has 4 divisors (see below), whose sum is σ = 7068000. Its totient is φ = 6973464.

The previous prime is 7020707. The next prime is 7020737. The reversal of 7020731 is 1370207.

7020731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1370207 = 1063 ⋅1289.

It is a cyclic number.

It is not a de Polignac number, because 7020731 - 2⁶ = 7020667 is a prime.

It is a super-2 number, since 2×7020731² = 98581327548722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7020737) 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, 23411 + ... + 23708.

It is an arithmetic number, because the mean of its divisors is an integer number (1767000).

Almost surely, 2^7020731 is an apocalyptic number.

7020731 is a deficient number, since it is larger than the sum of its proper divisors (47269).

7020731 is a wasteful number, since it uses less digits than its factorization.

7020731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47268.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 7020731 is about 2649.6662053927. Note that the first 3 decimals coincide. The cubic root of 7020731 is about 191.4817749041.

Adding to 7020731 its reverse (1370207), we get a palindrome (8390938).

The spelling of 7020731 in words is "seven million, twenty thousand, seven hundred thirty-one".