120323531 has 2 divisors, whose sum is σ = 120323532. Its totient is φ = 120323530.

The previous prime is 120323521. The next prime is 120323549. The reversal of 120323531 is 135323021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120323531 is a prime.

It is a super-2 number, since 2×120323531² = 28955504224615922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120323521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60161765 + 60161766.

It is an arithmetic number, because the mean of its divisors is an integer number (60161766).

Almost surely, 2^120323531 is an apocalyptic number.

120323531 is a deficient number, since it is larger than the sum of its proper divisors (1).

120323531 is an equidigital number, since it uses as much as digits as its factorization.

120323531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 120323531 is about 10969.2083123624. The cubic root of 120323531 is about 493.6852926793.

Adding to 120323531 its reverse (135323021), we get a palindrome (255646552).

The spelling of 120323531 in words is "one hundred twenty million, three hundred twenty-three thousand, five hundred thirty-one".