45031 has 6 divisors (see below), whose sum is σ = 52440. Its totient is φ = 38556.

The previous prime is 45013. The next prime is 45053. The reversal of 45031 is 13054.

It is not a de Polignac number, because 45031 - 2⁹ = 44519 is a prime.

It is a super-2 number, since 2×45031² = 4055581922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411 + ... + 508.

It is an arithmetic number, because the mean of its divisors is an integer number (8740).

2⁴⁵⁰³¹ is an apocalyptic number.

45031 is a deficient number, since it is larger than the sum of its proper divisors (7409).

45031 is an equidigital number, since it uses as much as digits as its factorization.

45031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 45031 is about 212.2050894771. The cubic root of 45031 is about 35.5770988510.

Adding to 45031 its reverse (13054), we get a palindrome (58085).

The spelling of 45031 in words is "forty-five thousand, thirty-one".