545130031 has 4 divisors (see below), whose sum is σ = 545180032. Its totient is φ = 545080032.

The previous prime is 545129999. The next prime is 545130067. The reversal of 545130031 is 130031545.

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.

It is a cyclic number.

It is not a de Polignac number, because 545130031 - 2⁵ = 545129999 is a prime.

It is a super-2 number, since 2×545130031² = 594333501396121922, 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 = 545129984 and 545130011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545130331) 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, 906 + ... + 33031.

It is an arithmetic number, because the mean of its divisors is an integer number (136295008).

Almost surely, 2^545130031 is an apocalyptic number.

545130031 is a deficient number, since it is larger than the sum of its proper divisors (50001).

545130031 is a wasteful number, since it uses less digits than its factorization.

545130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50000.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 545130031 is about 23348.0198517990. The cubic root of 545130031 is about 816.8958741527.

Adding to 545130031 its reverse (130031545), we get a palindrome (675161576).

The spelling of 545130031 in words is "five hundred forty-five million, one hundred thirty thousand, thirty-one".