7120213531 has 4 divisors (see below), whose sum is σ = 7125679312. Its totient is φ = 7114747752.

The previous prime is 7120213469. The next prime is 7120213537. The reversal of 7120213531 is 1353120217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1353120217 = 20359 ⋅66463.

It is a cyclic number.

It is not a de Polignac number, because 7120213531 - 2⁷ = 7120213403 is a prime.

It is a super-2 number, since 2×7120213531² (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 = 7120213496 and 7120213505.

It is not an unprimeable number, because it can be changed into a prime (7120213537) 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, 2730936 + ... + 2733541.

It is an arithmetic number, because the mean of its divisors is an integer number (1781419828).

Almost surely, 2^7120213531 is an apocalyptic number.

7120213531 is a deficient number, since it is larger than the sum of its proper divisors (5465781).

7120213531 is a wasteful number, since it uses less digits than its factorization.

7120213531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5465780.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 7120213531 is about 84381.3577219518. The cubic root of 7120213531 is about 1923.8195748121.

Adding to 7120213531 its reverse (1353120217), we get a palindrome (8473333748).

The spelling of 7120213531 in words is "seven billion, one hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".