1001311131 has 8 divisors (see below), whose sum is σ = 1371164944. Its totient is φ = 649499040.

The previous prime is 1001311123. The next prime is 1001311133. The reversal of 1001311131 is 1311131001.

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

It is not a de Polignac number, because 1001311131 - 2³ = 1001311123 is a prime.

It is a super-2 number, since 2×1001311131² = 2005247962128998322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001311133) 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, 4510300 + ... + 4510521.

It is an arithmetic number, because the mean of its divisors is an integer number (171395618).

Almost surely, 2^1001311131 is an apocalyptic number.

1001311131 is a deficient number, since it is larger than the sum of its proper divisors (369853813).

1001311131 is an equidigital number, since it uses as much as digits as its factorization.

1001311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9020861.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1001311131 is about 31643.5006122900. The cubic root of 1001311131 is about 1000.4368527985.

Adding to 1001311131 its reverse (1311131001), we get a palindrome (2312442132).

The spelling of 1001311131 in words is "one billion, one million, three hundred eleven thousand, one hundred thirty-one".