120920311 has 2 divisors, whose sum is σ = 120920312. Its totient is φ = 120920310.

The previous prime is 120920309. The next prime is 120920341. The reversal of 120920311 is 113029021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120920311 - 2¹ = 120920309 is a prime.

It is a super-2 number, since 2×120920311² = 29243443224673442, which contains 22 as substring.

Together with 120920309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120920341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60460155 + 60460156.

It is an arithmetic number, because the mean of its divisors is an integer number (60460156).

Almost surely, 2^120920311 is an apocalyptic number.

120920311 is a deficient number, since it is larger than the sum of its proper divisors (1).

120920311 is an equidigital number, since it uses as much as digits as its factorization.

120920311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 120920311 is about 10996.3771761431. The cubic root of 120920311 is about 494.5001395532.

Adding to 120920311 its reverse (113029021), we get a palindrome (233949332).

The spelling of 120920311 in words is "one hundred twenty million, nine hundred twenty thousand, three hundred eleven".