120920531 has 2 divisors, whose sum is σ = 120920532. Its totient is φ = 120920530.

The previous prime is 120920479. The next prime is 120920537. The reversal of 120920531 is 135029021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120920531 is a prime.

It is a super-2 number, since 2×120920531² = 29243549634643922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120920497 and 120920506.

It is not a weakly prime, because it can be changed into another prime (120920537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60460265 + 60460266.

It is an arithmetic number, because the mean of its divisors is an integer number (60460266).

Almost surely, 2^120920531 is an apocalyptic number.

120920531 is a deficient number, since it is larger than the sum of its proper divisors (1).

120920531 is an equidigital number, since it uses as much as digits as its factorization.

120920531 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 23.

The square root of 120920531 is about 10996.3871794331. The cubic root of 120920531 is about 494.5004394476.

Adding to 120920531 its reverse (135029021), we get a palindrome (255949552).

The spelling of 120920531 in words is "one hundred twenty million, nine hundred twenty thousand, five hundred thirty-one".