120115155131 has 4 divisors (see below), whose sum is σ = 120115900632. Its totient is φ = 120114409632.

The previous prime is 120115155031. The next prime is 120115155157. The reversal of 120115155131 is 131551511021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 131551511021 = 7 ⋅18793073003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120115155131 is a prime.

It is a super-2 number, since 2×120115155131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120115155131.

It is not an unprimeable number, because it can be changed into a prime (120115155191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19445 + ... + 490518.

It is an arithmetic number, because the mean of its divisors is an integer number (30028975158).

Almost surely, 2^120115155131 is an apocalyptic number.

120115155131 is a deficient number, since it is larger than the sum of its proper divisors (745501).

120115155131 is an equidigital number, since it uses as much as digits as its factorization.

120115155131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745500.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 120115155131 its reverse (131551511021), we get a palindrome (251666666152).

The spelling of 120115155131 in words is "one hundred twenty billion, one hundred fifteen million, one hundred fifty-five thousand, one hundred thirty-one".