45709031 has 4 divisors (see below), whose sum is σ = 46152912. Its totient is φ = 45265152.

The previous prime is 45709021. The next prime is 45709049. The reversal of 45709031 is 13090754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13090754 = 2 ⋅6545377.

It is a cyclic number.

It is not a de Polignac number, because 45709031 - 2¹⁰ = 45708007 is a prime.

It is a super-2 number, since 2×45709031² = 4178631029917922, 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 = 45708985 and 45709003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45709021) 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 3 ways as a sum of consecutive naturals, for example, 221786 + ... + 221991.

It is an arithmetic number, because the mean of its divisors is an integer number (11538228).

Almost surely, 2^45709031 is an apocalyptic number.

45709031 is a deficient number, since it is larger than the sum of its proper divisors (443881).

45709031 is a wasteful number, since it uses less digits than its factorization.

45709031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443880.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 45709031 is about 6760.8454352988. The cubic root of 45709031 is about 357.5477133246.

Adding to 45709031 its reverse (13090754), we get a palindrome (58799785).

The spelling of 45709031 in words is "forty-five million, seven hundred nine thousand, thirty-one".