1000131311 has 4 divisors (see below), whose sum is σ = 1015058712. Its totient is φ = 985203912.

The previous prime is 1000131277. The next prime is 1000131383. The reversal of 1000131311 is 1131310001.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1000131311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000131292 and 1000131301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000131611) 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, 7463600 + ... + 7463733.

It is an arithmetic number, because the mean of its divisors is an integer number (253764678).

Almost surely, 2^1000131311 is an apocalyptic number.

1000131311 is a deficient number, since it is larger than the sum of its proper divisors (14927401).

1000131311 is an equidigital number, since it uses as much as digits as its factorization.

1000131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14927400.

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

The square root of 1000131311 is about 31624.8527427402. The cubic root of 1000131311 is about 1000.0437684176.

Adding to 1000131311 its reverse (1131310001), we get a palindrome (2131441312).

The spelling of 1000131311 in words is "one billion, one hundred thirty-one thousand, three hundred eleven".