120430615631 has 4 divisors (see below), whose sum is σ = 120431599200. Its totient is φ = 120429632064.

The previous prime is 120430615561. The next prime is 120430615663. The reversal of 120430615631 is 136516034021.

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: 136516034021 = 29 ⋅4707449449.

It is a cyclic number.

It is not a de Polignac number, because 120430615631 - 2¹⁸ = 120430353487 is a prime.

It is a super-2 number, since 2×120430615631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120430615231) 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, 276791 + ... + 563448.

It is an arithmetic number, because the mean of its divisors is an integer number (30107899800).

Almost surely, 2^120430615631 is an apocalyptic number.

120430615631 is a deficient number, since it is larger than the sum of its proper divisors (983569).

120430615631 is an equidigital number, since it uses as much as digits as its factorization.

120430615631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983568.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 120430615631 its reverse (136516034021), we get a palindrome (256946649652).

The spelling of 120430615631 in words is "one hundred twenty billion, four hundred thirty million, six hundred fifteen thousand, six hundred thirty-one".