2120531 has 8 divisors (see below), whose sum is σ = 2529024. Its totient is φ = 1738440.

The previous prime is 2120513. The next prime is 2120537. The reversal of 2120531 is 1350212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2120531 - 2¹⁴ = 2104147 is a prime.

It is a super-2 number, since 2×2120531² = 8993303443922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6425 + ... + 6746.

It is an arithmetic number, because the mean of its divisors is an integer number (316128).

2^2120531 is an apocalyptic number.

2120531 is a deficient number, since it is larger than the sum of its proper divisors (408493).

2120531 is a wasteful number, since it uses less digits than its factorization.

2120531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13201.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2120531 is about 1456.2043125880. The cubic root of 2120531 is about 128.4738903383.

Adding to 2120531 its reverse (1350212), we get a palindrome (3470743).

The spelling of 2120531 in words is "two million, one hundred twenty thousand, five hundred thirty-one".