1006431131 has 4 divisors (see below), whose sum is σ = 1022930064. Its totient is φ = 989932200.

The previous prime is 1006431103. The next prime is 1006431137. The reversal of 1006431131 is 1311346001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1006431131 - 2⁶ = 1006431067 is a prime.

It is a super-2 number, since 2×1006431131² = 2025807242891878322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006431137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8249375 + ... + 8249496.

It is an arithmetic number, because the mean of its divisors is an integer number (255732516).

Almost surely, 2^1006431131 is an apocalyptic number.

1006431131 is a deficient number, since it is larger than the sum of its proper divisors (16498933).

1006431131 is an equidigital number, since it uses as much as digits as its factorization.

1006431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16498932.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1006431131 is about 31724.2987471749. The cubic root of 1006431131 is about 1002.1391311883.

Adding to 1006431131 its reverse (1311346001), we get a palindrome (2317777132).

The spelling of 1006431131 in words is "one billion, six million, four hundred thirty-one thousand, one hundred thirty-one".