120727631 has 4 divisors (see below), whose sum is σ = 123296352. Its totient is φ = 118158912.

The previous prime is 120727613. The next prime is 120727643. The reversal of 120727631 is 136727021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136727021 = 19 ⋅7196159.

It is a cyclic number.

It is not a de Polignac number, because 120727631 - 2¹⁴ = 120711247 is a prime.

It is a super-2 number, since 2×120727631² = 29150321773744322, 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 = 120727594 and 120727603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120727681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284290 + ... + 1284383.

It is an arithmetic number, because the mean of its divisors is an integer number (30824088).

Almost surely, 2^120727631 is an apocalyptic number.

120727631 is a deficient number, since it is larger than the sum of its proper divisors (2568721).

120727631 is an equidigital number, since it uses as much as digits as its factorization.

120727631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568720.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 120727631 is about 10987.6126160327. The cubic root of 120727631 is about 494.2373468127.

The spelling of 120727631 in words is "one hundred twenty million, seven hundred twenty-seven thousand, six hundred thirty-one".