1031401042040 has 32 divisors (see below), whose sum is σ = 2353337595360. Its totient is φ = 406749705600.

The previous prime is 1031401042039. The next prime is 1031401042097. The reversal of 1031401042040 is 402401041301.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181581851 + ... + 181587530.

It is an arithmetic number, because the mean of its divisors is an integer number (73541799855).

Almost surely, 2^{1031401042040} is an apocalyptic number.

1031401042040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031401042040 is an abundant number, since it is smaller than the sum of its proper divisors (1321936553320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031401042040 is a wasteful number, since it uses less digits than its factorization.

1031401042040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363169463 (or 363169459 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1031401042040 its reverse (402401041301), we get a palindrome (1433802083341).

The spelling of 1031401042040 in words is "one trillion, thirty-one billion, four hundred one million, forty-two thousand, forty".