1000131131 has 4 divisors (see below), whose sum is σ = 1058962392. Its totient is φ = 941299872.

The previous prime is 1000131113. The next prime is 1000131169. The reversal of 1000131131 is 1311310001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311310001 = 157 ⋅8352293.

It is a cyclic number.

It is not a de Polignac number, because 1000131131 - 2¹⁴ = 1000114747 is a prime.

It is a super-3 number, since 3×1000131131³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000161131) 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, 29415605 + ... + 29415638.

It is an arithmetic number, because the mean of its divisors is an integer number (264740598).

Almost surely, 2^1000131131 is an apocalyptic number.

1000131131 is a deficient number, since it is larger than the sum of its proper divisors (58831261).

1000131131 is an equidigital number, since it uses as much as digits as its factorization.

1000131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58831260.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1000131131 is about 31624.8498968770. The cubic root of 1000131131 is about 1000.0437084229.

Adding to 1000131131 its reverse (1311310001), we get a palindrome (2311441132).

The spelling of 1000131131 in words is "one billion, one hundred thirty-one thousand, one hundred thirty-one".