1400320311 has 72 divisors (see below), whose sum is σ = 2265217920. Its totient is φ = 766831104.

The previous prime is 1400320297. The next prime is 1400320321. The reversal of 1400320311 is 1130230041.

It is not a de Polignac number, because 1400320311 - 2¹⁵ = 1400287543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400320321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2783686 + ... + 2784188.

It is an arithmetic number, because the mean of its divisors is an integer number (31461360).

Almost surely, 2^1400320311 is an apocalyptic number.

1400320311 is a deficient number, since it is larger than the sum of its proper divisors (864897609).

1400320311 is a wasteful number, since it uses less digits than its factorization.

1400320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1400320311 is about 37420.8539587220. The cubic root of 1400320311 is about 1118.7742518551.

Adding to 1400320311 its reverse (1130230041), we get a palindrome (2530550352).

The spelling of 1400320311 in words is "one billion, four hundred million, three hundred twenty thousand, three hundred eleven".