1031401420405 has 32 divisors (see below), whose sum is σ = 1302452252640. Its totient is φ = 783049236480.

The previous prime is 1031401420393. The next prime is 1031401420471. The reversal of 1031401420405 is 5040241041301.

It can be written as a sum of positive squares in 16 ways, for example, as 800992780324 + 230408640081 = 894982^2 + 480009^2 .

It is not a de Polignac number, because 1031401420405 - 2⁵ = 1031401420373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031401420405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36522831 + ... + 36551059.

It is an arithmetic number, because the mean of its divisors is an integer number (40701632895).

Almost surely, 2^{1031401420405} is an apocalyptic number.

It is an amenable number.

1031401420405 is a deficient number, since it is larger than the sum of its proper divisors (271050832235).

1031401420405 is a wasteful number, since it uses less digits than its factorization.

1031401420405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33129.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 1031401420405 its reverse (5040241041301), we get a palindrome (6071642461706).

The spelling of 1031401420405 in words is "one trillion, thirty-one billion, four hundred one million, four hundred twenty thousand, four hundred five".