120311233131 has 4 divisors (see below), whose sum is σ = 160414977512. Its totient is φ = 80207488752.

The previous prime is 120311233109. The next prime is 120311233157. The reversal of 120311233131 is 131332113021.

It is a happy number.

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

It is not a de Polignac number, because 120311233131 - 2¹⁵ = 120311200363 is a prime.

It is a super-2 number, since 2×120311233131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120311233098 and 120311233107.

It is not an unprimeable number, because it can be changed into a prime (120311233331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20051872186 + ... + 20051872191.

It is an arithmetic number, because the mean of its divisors is an integer number (40103744378).

Almost surely, 2^120311233131 is an apocalyptic number.

120311233131 is a deficient number, since it is larger than the sum of its proper divisors (40103744381).

120311233131 is an equidigital number, since it uses as much as digits as its factorization.

120311233131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40103744380.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 120311233131 its reverse (131332113021), we get a palindrome (251643346152).

The spelling of 120311233131 in words is "one hundred twenty billion, three hundred eleven million, two hundred thirty-three thousand, one hundred thirty-one".