1431201311 has 4 divisors (see below), whose sum is σ = 1431582432. Its totient is φ = 1430820192.

The previous prime is 1431201263. The next prime is 1431201313. The reversal of 1431201311 is 1131021341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131021341 = 19 ⋅59527439.

It is a cyclic number.

It is not a de Polignac number, because 1431201311 - 2¹⁴ = 1431184927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1431201311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431201313) 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 3 ways as a sum of consecutive naturals, for example, 184871 + ... + 192456.

It is an arithmetic number, because the mean of its divisors is an integer number (357895608).

Almost surely, 2^1431201311 is an apocalyptic number.

1431201311 is a deficient number, since it is larger than the sum of its proper divisors (381121).

1431201311 is an equidigital number, since it uses as much as digits as its factorization.

1431201311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381120.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1431201311 is about 37831.2213786444. The cubic root of 1431201311 is about 1126.9385666706.

Adding to 1431201311 its reverse (1131021341), we get a palindrome (2562222652).

The spelling of 1431201311 in words is "one billion, four hundred thirty-one million, two hundred one thousand, three hundred eleven".