1204223431 has 4 divisors (see below), whose sum is σ = 1204632000. Its totient is φ = 1203814864.

The previous prime is 1204223399. The next prime is 1204223467. The reversal of 1204223431 is 1343224021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1343224021 = 12433 ⋅108037.

It is a cyclic number.

It is not a de Polignac number, because 1204223431 - 2⁵ = 1204223399 is a prime.

It is a super-2 number, since 2×1204223431² = 2900308143538823522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204223491) 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, 199831 + ... + 205768.

It is an arithmetic number, because the mean of its divisors is an integer number (301158000).

Almost surely, 2^1204223431 is an apocalyptic number.

1204223431 is a deficient number, since it is larger than the sum of its proper divisors (408569).

1204223431 is an equidigital number, since it uses as much as digits as its factorization.

1204223431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408568.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1204223431 is about 34701.9225836264. The cubic root of 1204223431 is about 1063.9037942180.

Adding to 1204223431 its reverse (1343224021), we get a palindrome (2547447452).

The spelling of 1204223431 in words is "one billion, two hundred four million, two hundred twenty-three thousand, four hundred thirty-one".