7212531 has 8 divisors (see below), whose sum is σ = 9634240. Its totient is φ = 4799592.

The previous prime is 7212529. The next prime is 7212551. The reversal of 7212531 is 1352127.

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

It is not a de Polignac number, because 7212531 - 2¹ = 7212529 is a prime.

It is a super-2 number, since 2×7212531² = 104041206851922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7212498 and 7212507.

It is not an unprimeable number, because it can be changed into a prime (7212551) 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, 60 + ... + 3798.

It is an arithmetic number, because the mean of its divisors is an integer number (1204280).

Almost surely, 2^7212531 is an apocalyptic number.

7212531 is a deficient number, since it is larger than the sum of its proper divisors (2421709).

7212531 is a wasteful number, since it uses less digits than its factorization.

7212531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385.

The product of its digits is 420, while the sum is 21.

The square root of 7212531 is about 2685.6155718941. The cubic root of 7212531 is about 193.2098355824.

Adding to 7212531 its reverse (1352127), we get a palindrome (8564658).

The spelling of 7212531 in words is "seven million, two hundred twelve thousand, five hundred thirty-one".