1631412 has 18 divisors (see below), whose sum is σ = 4123938. Its totient is φ = 543792.

The previous prime is 1631407. The next prime is 1631447. The reversal of 1631412 is 2141361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 318096 = 1146^2 + 564^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1631412² = 5323010227488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22623 + ... + 22694.

2^1631412 is an apocalyptic number.

1631412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1631412 is an abundant number, since it is smaller than the sum of its proper divisors (2492526).

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

1631412 is a wasteful number, since it uses less digits than its factorization.

1631412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45327 (or 45322 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1631412 is about 1277.2673956537. The cubic root of 1631412 is about 117.7211648597.

Adding to 1631412 its reverse (2141361), we get a palindrome (3772773).

The spelling of 1631412 in words is "one million, six hundred thirty-one thousand, four hundred twelve".