45020123231 has 4 divisors (see below), whose sum is σ = 47668365792. Its totient is φ = 42371880672.

The previous prime is 45020123201. The next prime is 45020123233. The reversal of 45020123231 is 13232102054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45020123231 - 2¹⁰ = 45020122207 is a prime.

It is a super-2 number, since 2×45020123231² (a number of 22 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 = 45020123197 and 45020123206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45020123233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324121255 + ... + 1324121288.

It is an arithmetic number, because the mean of its divisors is an integer number (11917091448).

Almost surely, 2^45020123231 is an apocalyptic number.

45020123231 is a deficient number, since it is larger than the sum of its proper divisors (2648242561).

45020123231 is a wasteful number, since it uses less digits than its factorization.

45020123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648242560.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 45020123231 its reverse (13232102054), we get a palindrome (58252225285).

The spelling of 45020123231 in words is "forty-five billion, twenty million, one hundred twenty-three thousand, two hundred thirty-one".