1440031400031 has 24 divisors (see below), whose sum is σ = 2237994192000. Its totient is φ = 821225995632.

The previous prime is 1440031400009. The next prime is 1440031400051. The reversal of 1440031400031 is 1300041300441.

It is not a de Polignac number, because 1440031400031 - 2⁹ = 1440031399519 is a prime.

It is a super-2 number, since 2×1440031400031² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1440031399980 and 1440031400007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440031400051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9742411 + ... + 9889116.

It is an arithmetic number, because the mean of its divisors is an integer number (93249758000).

Almost surely, 2^{1440031400031} is an apocalyptic number.

1440031400031 is a deficient number, since it is larger than the sum of its proper divisors (797962791969).

1440031400031 is a wasteful number, since it uses less digits than its factorization.

1440031400031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19632043 (or 19632036 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1440031400031 its reverse (1300041300441), we get a palindrome (2740072700472).

The spelling of 1440031400031 in words is "one trillion, four hundred forty billion, thirty-one million, four hundred thousand, thirty-one".