1001343156 has 48 divisors (see below), whose sum is σ = 2551082688. Its totient is φ = 303174400.

The previous prime is 1001343139. The next prime is 1001343179. The reversal of 1001343156 is 6513431001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194536 + ... + 199616.

It is an arithmetic number, because the mean of its divisors is an integer number (53147556).

Almost surely, 2^1001343156 is an apocalyptic number.

It is an amenable number.

1001343156 is an abundant number, since it is smaller than the sum of its proper divisors (1549739532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001343156 is a wasteful number, since it uses less digits than its factorization.

1001343156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6592 (or 6590 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1001343156 is about 31644.0066363285. The cubic root of 1001343156 is about 1000.4475183641.

Adding to 1001343156 its reverse (6513431001), we get a palindrome (7514774157).

The spelling of 1001343156 in words is "one billion, one million, three hundred forty-three thousand, one hundred fifty-six".