1631061 has 12 divisors (see below), whose sum is σ = 2376192. Its totient is φ = 1078056.

The previous prime is 1631059. The next prime is 1631101. The reversal of 1631061 is 1601361.

It is not a de Polignac number, because 1631061 - 2¹ = 1631059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430 + ... + 1856.

It is an arithmetic number, because the mean of its divisors is an integer number (198016).

2^1631061 is an apocalyptic number.

It is an amenable number.

1631061 is a deficient number, since it is larger than the sum of its proper divisors (745131).

1631061 is a wasteful number, since it uses less digits than its factorization.

1631061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1631061 is about 1277.1299855535. The cubic root of 1631061 is about 117.7127216436.

The spelling of 1631061 in words is "one million, six hundred thirty-one thousand, sixty-one".