1631130 has 16 divisors (see below), whose sum is σ = 3914784. Its totient is φ = 434960.

The previous prime is 1631117. The next prime is 1631143. The reversal of 1631130 is 311361.

It is an interprime number because it is at equal distance from previous prime (1631117) and next prime (1631143).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27156 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (244674).

2^1631130 is an apocalyptic number.

1631130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1631130 is an abundant number, since it is smaller than the sum of its proper divisors (2283654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631130 is a wasteful number, since it uses less digits than its factorization.

1631130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54381.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1631130 is about 1277.1569989629. The cubic root of 1631130 is about 117.7143815167.

Adding to 1631130 its reverse (311361), we get a palindrome (1942491).

The spelling of 1631130 in words is "one million, six hundred thirty-one thousand, one hundred thirty".