120040702731 has 8 divisors (see below), whose sum is σ = 177838078160. Its totient is φ = 80027135136.

The previous prime is 120040702721. The next prime is 120040702739. The reversal of 120040702731 is 137207040021.

It is a happy number.

120040702731 is a `hidden beast` number, since 1 + 200 + 407 + 0 + 27 + 31 = 666.

It is not a de Polignac number, because 120040702731 - 2¹⁰ = 120040701707 is a prime.

It is a super-2 number, since 2×120040702731² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4445951953 = 120040702731 / (1 + 2 + 0 + 0 + 4 + 0 + 7 + 0 + 2 + 7 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120040702695 and 120040702704.

It is not an unprimeable number, because it can be changed into a prime (120040702739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222975950 + ... + 2222976003.

It is an arithmetic number, because the mean of its divisors is an integer number (22229759770).

Almost surely, 2^120040702731 is an apocalyptic number.

120040702731 is a deficient number, since it is larger than the sum of its proper divisors (57797375429).

120040702731 is an equidigital number, since it uses as much as digits as its factorization.

120040702731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445951962 (or 4445951956 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

Adding to 120040702731 its reverse (137207040021), we get a palindrome (257247742752).

The spelling of 120040702731 in words is "one hundred twenty billion, forty million, seven hundred two thousand, seven hundred thirty-one".