1401206311 has 8 divisors (see below), whose sum is σ = 1469382480. Its totient is φ = 1334354112.

The previous prime is 1401206269. The next prime is 1401206321. The reversal of 1401206311 is 1136021041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1401206311 - 2¹³ = 1401198119 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 (1401206321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328825 + ... + 333058.

It is an arithmetic number, because the mean of its divisors is an integer number (183672810).

Almost surely, 2^1401206311 is an apocalyptic number.

1401206311 is a deficient number, since it is larger than the sum of its proper divisors (68176169).

1401206311 is an equidigital number, since it uses as much as digits as its factorization.

1401206311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661985.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1401206311 is about 37432.6904055800. The cubic root of 1401206311 is about 1119.0101562163.

Adding to 1401206311 its reverse (1136021041), we get a palindrome (2537227352).

The spelling of 1401206311 in words is "one billion, four hundred one million, two hundred six thousand, three hundred eleven".