120220434531 has 12 divisors (see below), whose sum is σ = 175441964152. Its totient is φ = 79320698496.

The previous prime is 120220434527. The next prime is 120220434557. The reversal of 120220434531 is 135434022021.

120220434531 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 204 + 3 + 453 + 1 = 666.

It is not a de Polignac number, because 120220434531 - 2² = 120220434527 is a prime.

It is a super-2 number, since 2×120220434531² (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 = 120220434495 and 120220434504.

It is not an unprimeable number, because it can be changed into a prime (120220434031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68853901 + ... + 68855646.

Almost surely, 2^120220434531 is an apocalyptic number.

120220434531 is a deficient number, since it is larger than the sum of its proper divisors (55221529621).

120220434531 is a wasteful number, since it uses less digits than its factorization.

120220434531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137709650 (or 137709647 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 120220434531 its reverse (135434022021), we get a palindrome (255654456552).

The spelling of 120220434531 in words is "one hundred twenty billion, two hundred twenty million, four hundred thirty-four thousand, five hundred thirty-one".