1401444431123 has 32 divisors (see below), whose sum is σ = 1615201075200. Its totient is φ = 1202578423200.

The previous prime is 1401444431119. The next prime is 1401444431147. The reversal of 1401444431123 is 3211344441041.

It is not a de Polignac number, because 1401444431123 - 2² = 1401444431119 is a prime.

It is a super-2 number, since 2×1401444431123² (a number of 25 digits) contains 22 as substring.

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 1401444431123.

It is not an unprimeable number, because it can be changed into a prime (1401444431113) 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 31 ways as a sum of consecutive naturals, for example, 66855518 + ... + 66876476.

It is an arithmetic number, because the mean of its divisors is an integer number (50475033600).

Almost surely, 2^{1401444431123} is an apocalyptic number.

1401444431123 is a deficient number, since it is larger than the sum of its proper divisors (213756644077).

1401444431123 is a wasteful number, since it uses less digits than its factorization.

1401444431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22143.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 1401444431123 its reverse (3211344441041), we get a palindrome (4612788872164).

The spelling of 1401444431123 in words is "one trillion, four hundred one billion, four hundred forty-four million, four hundred thirty-one thousand, one hundred twenty-three".