45311031 has 6 divisors (see below), whose sum is σ = 65449280. Its totient is φ = 30207348.

The previous prime is 45311011. The next prime is 45311033. The reversal of 45311031 is 13011354.

It is not a de Polignac number, because 45311031 - 2²¹ = 43213879 is a prime.

It is a super-2 number, since 2×45311031² = 4106179060565922, 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 = 45310995 and 45311013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45311033) 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, 2517271 + ... + 2517288.

Almost surely, 2^45311031 is an apocalyptic number.

45311031 is a deficient number, since it is larger than the sum of its proper divisors (20138249).

45311031 is a wasteful number, since it uses less digits than its factorization.

45311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034565 (or 5034562 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 45311031 is about 6731.3468934530. The cubic root of 45311031 is about 356.5069341327.

Adding to 45311031 its reverse (13011354), we get a palindrome (58322385).

The spelling of 45311031 in words is "forty-five million, three hundred eleven thousand, thirty-one".