120603531 has 4 divisors (see below), whose sum is σ = 160804712. Its totient is φ = 80402352.

The previous prime is 120603523. The next prime is 120603569. The reversal of 120603531 is 135306021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135306021 = 3 ⋅45102007.

It is not a de Polignac number, because 120603531 - 2³ = 120603523 is a prime.

It is a super-2 number, since 2×120603531² = 29090423379335922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120603498 and 120603507.

It is not an unprimeable number, because it can be changed into a prime (120603031) 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, 20100586 + ... + 20100591.

It is an arithmetic number, because the mean of its divisors is an integer number (40201178).

Almost surely, 2^120603531 is an apocalyptic number.

120603531 is a deficient number, since it is larger than the sum of its proper divisors (40201181).

120603531 is an equidigital number, since it uses as much as digits as its factorization.

120603531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40201180.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 120603531 is about 10981.9638954060. The cubic root of 120603531 is about 494.0679410125.

Adding to 120603531 its reverse (135306021), we get a palindrome (255909552).

The spelling of 120603531 in words is "one hundred twenty million, six hundred three thousand, five hundred thirty-one".