1040255531 has 8 divisors (see below), whose sum is σ = 1194499584. Its totient is φ = 887420520.

The previous prime is 1040255521. The next prime is 1040255543. The reversal of 1040255531 is 1355520401.

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

It is not a de Polignac number, because 1040255531 - 2¹⁸ = 1039993387 is a prime.

It is a super-2 number, since 2×1040255531² = 2164263139552183922, which 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 1040255531.

It is not an unprimeable number, because it can be changed into a prime (1040255501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350675 + ... + 353628.

It is an arithmetic number, because the mean of its divisors is an integer number (149312448).

Almost surely, 2^1040255531 is an apocalyptic number.

1040255531 is a deficient number, since it is larger than the sum of its proper divisors (154244053).

1040255531 is an equidigital number, since it uses as much as digits as its factorization.

1040255531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704521.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1040255531 is about 32252.9925898358. The cubic root of 1040255531 is about 1013.2423757544.

Adding to 1040255531 its reverse (1355520401), we get a palindrome (2395775932).

The spelling of 1040255531 in words is "one billion, forty million, two hundred fifty-five thousand, five hundred thirty-one".