1000343131 has 4 divisors (see below), whose sum is σ = 1000521664. Its totient is φ = 1000164600.

The previous prime is 1000343033. The next prime is 1000343143. The reversal of 1000343131 is 1313430001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313430001 = 13 ⋅101033077.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000343131 is a prime.

It is a super-2 number, since 2×1000343131² = 2001372759477766322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000343161) 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, 80580 + ... + 92161.

It is an arithmetic number, because the mean of its divisors is an integer number (250130416).

Almost surely, 2^1000343131 is an apocalyptic number.

1000343131 is a deficient number, since it is larger than the sum of its proper divisors (178533).

1000343131 is an equidigital number, since it uses as much as digits as its factorization.

1000343131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178532.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1000343131 is about 31628.2015138389. The cubic root of 1000343131 is about 1000.1143639204.

Adding to 1000343131 its reverse (1313430001), we get a palindrome (2313773132).

The spelling of 1000343131 in words is "one billion, three hundred forty-three thousand, one hundred thirty-one".