1204631 has 4 divisors (see below), whose sum is σ = 1246200. Its totient is φ = 1163064.

The previous prime is 1204613. The next prime is 1204633. The reversal of 1204631 is 1364021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1204631 - 2¹⁰ = 1203607 is a prime.

It is a super-2 number, since 2×1204631² = 2902271692322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204633) 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, 20741 + ... + 20798.

It is an arithmetic number, because the mean of its divisors is an integer number (311550).

2^1204631 is an apocalyptic number.

1204631 is a deficient number, since it is larger than the sum of its proper divisors (41569).

1204631 is an equidigital number, since it uses as much as digits as its factorization.

1204631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41568.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1204631 is about 1097.5568322415. The cubic root of 1204631 is about 106.4023806636.

Adding to 1204631 its reverse (1364021), we get a palindrome (2568652).

The spelling of 1204631 in words is "one million, two hundred four thousand, six hundred thirty-one".