1401340201391 has 4 divisors (see below), whose sum is σ = 1509135601512. Its totient is φ = 1293544801272.

The previous prime is 1401340201307. The next prime is 1401340201403. The reversal of 1401340201391 is 1931020431041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401340201391 - 2¹⁸ = 1401339939247 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 (1401340291391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53897700041 + ... + 53897700066.

It is an arithmetic number, because the mean of its divisors is an integer number (377283900378).

Almost surely, 2^{1401340201391} is an apocalyptic number.

1401340201391 is a deficient number, since it is larger than the sum of its proper divisors (107795400121).

1401340201391 is a wasteful number, since it uses less digits than its factorization.

1401340201391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107795400120.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 1401340201391 in words is "one trillion, four hundred one billion, three hundred forty million, two hundred one thousand, three hundred ninety-one".