1045631 has 4 divisors (see below), whose sum is σ = 1069992. Its totient is φ = 1021272.

The previous prime is 1045621. The next prime is 1045633. The reversal of 1045631 is 1365401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365401 = 71 ⋅19231.

It is a cyclic number.

It is not a de Polignac number, because 1045631 - 2¹⁴ = 1029247 is a prime.

It is a super-2 number, since 2×1045631² = 2186688376322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12116 + ... + 12201.

It is an arithmetic number, because the mean of its divisors is an integer number (267498).

2^1045631 is an apocalyptic number.

1045631 is a deficient number, since it is larger than the sum of its proper divisors (24361).

1045631 is an equidigital number, since it uses as much as digits as its factorization.

1045631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24360.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1045631 is about 1022.5610006254. The cubic root of 1045631 is about 101.4984671402.

The spelling of 1045631 in words is "one million, forty-five thousand, six hundred thirty-one".