801491131 has 8 divisors (see below), whose sum is σ = 918277344. Its totient is φ = 685276800.

The previous prime is 801491111. The next prime is 801491137. The reversal of 801491131 is 131194108.

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

It is a cyclic number.

It is not a de Polignac number, because 801491131 - 2¹³ = 801482939 is a prime.

It is a super-2 number, since 2×801491131² = 1284776066143318322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 801491131.

It is not an unprimeable number, because it can be changed into a prime (801491137) 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, 139960 + ... + 145573.

It is an arithmetic number, because the mean of its divisors is an integer number (114784668).

Almost surely, 2^801491131 is an apocalyptic number.

801491131 is a deficient number, since it is larger than the sum of its proper divisors (116786213).

801491131 is a wasteful number, since it uses less digits than its factorization.

801491131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285941.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 801491131 is about 28310.6186968777. The cubic root of 801491131 is about 928.8941768278.

The spelling of 801491131 in words is "eight hundred one million, four hundred ninety-one thousand, one hundred thirty-one".