1013931 has 24 divisors (see below), whose sum is σ = 1625040. Its totient is φ = 622656.

The previous prime is 1013923. The next prime is 1013933. The reversal of 1013931 is 1393101.

It is not a de Polignac number, because 1013931 - 2³ = 1013923 is a prime.

It is a super-2 number, since 2×1013931² = 2056112145522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1013933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21550 + ... + 21596.

It is an arithmetic number, because the mean of its divisors is an integer number (67710).

2^1013931 is an apocalyptic number.

1013931 is a deficient number, since it is larger than the sum of its proper divisors (611109).

1013931 is an equidigital number, since it uses as much as digits as its factorization.

1013931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 1013931 is about 1006.9414084245. The cubic root of 1013931 is about 100.4622268383.

The spelling of 1013931 in words is "one million, thirteen thousand, nine hundred thirty-one".