120311002131 has 4 divisors (see below), whose sum is σ = 160414669512. Its totient is φ = 80207334752.

The previous prime is 120311002121. The next prime is 120311002183. The reversal of 120311002131 is 131200113021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120311002131 - 2⁵ = 120311002099 is a prime.

It is a super-2 number, since 2×120311002131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120311002131.

It is not an unprimeable number, because it can be changed into a prime (120311002121) 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, 20051833686 + ... + 20051833691.

It is an arithmetic number, because the mean of its divisors is an integer number (40103667378).

Almost surely, 2^120311002131 is an apocalyptic number.

120311002131 is a deficient number, since it is larger than the sum of its proper divisors (40103667381).

120311002131 is an equidigital number, since it uses as much as digits as its factorization.

120311002131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40103667380.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 120311002131 its reverse (131200113021), we get a palindrome (251511115152).

The spelling of 120311002131 in words is "one hundred twenty billion, three hundred eleven million, two thousand, one hundred thirty-one".