1313204431 has 16 divisors (see below), whose sum is σ = 1638160128. Its totient is φ = 1022702400.

The previous prime is 1313204429. The next prime is 1313204461. The reversal of 1313204431 is 1344023131.

It is a cyclic number.

It is not a de Polignac number, because 1313204431 - 2¹ = 1313204429 is a prime.

It is a super-2 number, since 2×1313204431² = 3449011755196067522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313204411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178971 + ... + 186163.

It is an arithmetic number, because the mean of its divisors is an integer number (102385008).

Almost surely, 2^1313204431 is an apocalyptic number.

1313204431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1313204431 is a deficient number, since it is larger than the sum of its proper divisors (324955697).

1313204431 is a wasteful number, since it uses less digits than its factorization.

1313204431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9582.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1313204431 is about 36238.1626327826. The cubic root of 1313204431 is about 1095.0756273392.

Adding to 1313204431 its reverse (1344023131), we get a palindrome (2657227562).

The spelling of 1313204431 in words is "one billion, three hundred thirteen million, two hundred four thousand, four hundred thirty-one".