120533531 has 4 divisors (see below), whose sum is σ = 123791232. Its totient is φ = 117275832.

The previous prime is 120533509. The next prime is 120533533. The reversal of 120533531 is 135335021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135335021 = 233 ⋅580837.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120533531 is a prime.

It is a super-2 number, since 2×120533531² = 29056664190655922, 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 = 120533497 and 120533506.

It is not an unprimeable number, because it can be changed into a prime (120533533) 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, 1628795 + ... + 1628868.

It is an arithmetic number, because the mean of its divisors is an integer number (30947808).

Almost surely, 2^120533531 is an apocalyptic number.

120533531 is a deficient number, since it is larger than the sum of its proper divisors (3257701).

120533531 is an equidigital number, since it uses as much as digits as its factorization.

120533531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257700.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 120533531 is about 10978.7763890153. The cubic root of 120533531 is about 493.9723344995.

Adding to 120533531 its reverse (135335021), we get a palindrome (255868552).

The spelling of 120533531 in words is "one hundred twenty million, five hundred thirty-three thousand, five hundred thirty-one".