1431313311 has 4 divisors (see below), whose sum is σ = 1908417752. Its totient is φ = 954208872.

The previous prime is 1431313309. The next prime is 1431313313. The reversal of 1431313311 is 1133131341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1133131341 = 3 ⋅377710447.

It is an interprime number because it is at equal distance from previous prime (1431313309) and next prime (1431313313).

It is not a de Polignac number, because 1431313311 - 2¹ = 1431313309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431313313) 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, 238552216 + ... + 238552221.

It is an arithmetic number, because the mean of its divisors is an integer number (477104438).

Almost surely, 2^1431313311 is an apocalyptic number.

1431313311 is a deficient number, since it is larger than the sum of its proper divisors (477104441).

1431313311 is an equidigital number, since it uses as much as digits as its factorization.

1431313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477104440.

The product of its digits is 324, while the sum is 21.

The square root of 1431313311 is about 37832.7016085291. The cubic root of 1431313311 is about 1126.9679624484.

Adding to 1431313311 its reverse (1133131341), we get a palindrome (2564444652).

The spelling of 1431313311 in words is "one billion, four hundred thirty-one million, three hundred thirteen thousand, three hundred eleven".