45405131031 has 24 divisors (see below), whose sum is σ = 70933380336. Its totient is φ = 27821681280.

The previous prime is 45405130963. The next prime is 45405131063. The reversal of 45405131031 is 13013150454.

It is a happy number.

45405131031 is a `hidden beast` number, since 4 + 5 + 40 + 513 + 103 + 1 = 666.

It is not a de Polignac number, because 45405131031 - 2¹⁰ = 45405130007 is a prime.

It is a super-2 number, since 2×45405131031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45405130986 and 45405131004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45405131131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 805525 + ... + 860046.

It is an arithmetic number, because the mean of its divisors is an integer number (2955557514).

Almost surely, 2^45405131031 is an apocalyptic number.

45405131031 is a deficient number, since it is larger than the sum of its proper divisors (25528249305).

45405131031 is a wasteful number, since it uses less digits than its factorization.

45405131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665823 (or 1665820 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 45405131031 its reverse (13013150454), we get a palindrome (58418281485).

The spelling of 45405131031 in words is "forty-five billion, four hundred five million, one hundred thirty-one thousand, thirty-one".