1631043 has 16 divisors (see below), whose sum is σ = 2436640. Its totient is φ = 1078272.

The previous prime is 1631029. The next prime is 1631051. The reversal of 1631043 is 3401361.

It is not a de Polignac number, because 1631043 - 2⁴ = 1631027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631023) 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, 5055 + ... + 5367.

It is an arithmetic number, because the mean of its divisors is an integer number (152290).

2^1631043 is an apocalyptic number.

1631043 is a deficient number, since it is larger than the sum of its proper divisors (805597).

1631043 is a wasteful number, since it uses less digits than its factorization.

1631043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1631043 is about 1277.1229384832. The cubic root of 1631043 is about 117.7122886255.

The spelling of 1631043 in words is "one million, six hundred thirty-one thousand, forty-three".