45431130 has 32 divisors (see below), whose sum is σ = 110061504. Its totient is φ = 12000896.

The previous prime is 45431119. The next prime is 45431131. The reversal of 45431130 is 3113454.

It is a junction number, because it is equal to n+sod(n) for n = 45431097 and 45431106.

It is not an unprimeable number, because it can be changed into a prime (45431131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3867 + ... + 10286.

It is an arithmetic number, because the mean of its divisors is an integer number (3439422).

Almost surely, 2^45431130 is an apocalyptic number.

45431130 is an abundant number, since it is smaller than the sum of its proper divisors (64630374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45431130 is a wasteful number, since it uses less digits than its factorization.

45431130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14270.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 45431130 is about 6740.2618643492. The cubic root of 45431130 is about 356.8216356688.

Adding to 45431130 its reverse (3113454), we get a palindrome (48544584).

The spelling of 45431130 in words is "forty-five million, four hundred thirty-one thousand, one hundred thirty".