1403431313 has 4 divisors (see below), whose sum is σ = 1420340208. Its totient is φ = 1386522420.

The previous prime is 1403431279. The next prime is 1403431339. The reversal of 1403431313 is 3131343041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3131343041 = 37 ⋅84630893.

It is a cyclic number.

It is not a de Polignac number, because 1403431313 - 2¹⁸ = 1403169169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1403431213) 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, 8454323 + ... + 8454488.

It is an arithmetic number, because the mean of its divisors is an integer number (355085052).

Almost surely, 2^1403431313 is an apocalyptic number.

It is an amenable number.

1403431313 is a deficient number, since it is larger than the sum of its proper divisors (16908895).

1403431313 is an equidigital number, since it uses as much as digits as its factorization.

1403431313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16908894.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1403431313 is about 37462.3986551849. The cubic root of 1403431313 is about 1119.6021421146.

Adding to 1403431313 its reverse (3131343041), we get a palindrome (4534774354).

The spelling of 1403431313 in words is "one billion, four hundred three million, four hundred thirty-one thousand, three hundred thirteen".