1204103431 has 4 divisors (see below), whose sum is σ = 1222075192. Its totient is φ = 1186131672.

The previous prime is 1204103357. The next prime is 1204103471. The reversal of 1204103431 is 1343014021.

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 1204103431 - 2¹³ = 1204095239 is a prime.

It is a super-2 number, since 2×1204103431² = 2899730145091943522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1204103399 and 1204103408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204103471) 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, 8985780 + ... + 8985913.

It is an arithmetic number, because the mean of its divisors is an integer number (305518798).

Almost surely, 2^1204103431 is an apocalyptic number.

1204103431 is a deficient number, since it is larger than the sum of its proper divisors (17971761).

1204103431 is an equidigital number, since it uses as much as digits as its factorization.

1204103431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17971760.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1204103431 is about 34700.1935297197. The cubic root of 1204103431 is about 1063.8684539611.

Adding to 1204103431 its reverse (1343014021), we get a palindrome (2547117452).

The spelling of 1204103431 in words is "one billion, two hundred four million, one hundred three thousand, four hundred thirty-one".