7290206531 has 4 divisors (see below), whose sum is σ = 7342654200. Its totient is φ = 7237758864.

The previous prime is 7290206503. The next prime is 7290206587. The reversal of 7290206531 is 1356020927.

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

It is a cyclic number.

It is not a de Polignac number, because 7290206531 - 2²⁶ = 7223097667 is a prime.

It is a super-2 number, since 2×7290206531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7290206491 and 7290206500.

It is not an unprimeable number, because it can be changed into a prime (7290206591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26223626 + ... + 26223903.

It is an arithmetic number, because the mean of its divisors is an integer number (1835663550).

Almost surely, 2^7290206531 is an apocalyptic number.

7290206531 is a deficient number, since it is larger than the sum of its proper divisors (52447669).

7290206531 is a wasteful number, since it uses less digits than its factorization.

7290206531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52447668.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 7290206531 is about 85382.7062759198. The cubic root of 7290206531 is about 1939.0095318661.

The spelling of 7290206531 in words is "seven billion, two hundred ninety million, two hundred six thousand, five hundred thirty-one".