1031540554243 has 8 divisors (see below), whose sum is σ = 1059434118512. Its totient is φ = 1003647731616.

The previous prime is 1031540554237. The next prime is 1031540554273. The reversal of 1031540554243 is 3424550451301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1031540554243 - 2²⁹ = 1031003683331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031540554273) 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 7 ways as a sum of consecutive naturals, for example, 3745621 + ... + 4011577.

It is an arithmetic number, because the mean of its divisors is an integer number (132429264814).

Almost surely, 2^{1031540554243} is an apocalyptic number.

1031540554243 is a deficient number, since it is larger than the sum of its proper divisors (27893564269).

1031540554243 is a wasteful number, since it uses less digits than its factorization.

1031540554243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370821.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 1031540554243 in words is "one trillion, thirty-one billion, five hundred forty million, five hundred fifty-four thousand, two hundred forty-three".