1004431131 has 16 divisors (see below), whose sum is σ = 1623323520. Its totient is φ = 608745960.

The previous prime is 1004431121. The next prime is 1004431133. The reversal of 1004431131 is 1311344001.

1004431131 is a `hidden beast` number, since 100 + 4 + 431 + 131 = 666.

It is not a de Polignac number, because 1004431131 - 2⁷ = 1004431003 is a prime.

It is a super-2 number, since 2×1004431131² = 2017763793843878322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1004431133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1690665 + ... + 1691258.

It is an arithmetic number, because the mean of its divisors is an integer number (101457720).

Almost surely, 2^1004431131 is an apocalyptic number.

1004431131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1004431131 is a deficient number, since it is larger than the sum of its proper divisors (618892389).

1004431131 is a wasteful number, since it uses less digits than its factorization.

1004431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3381943 (or 3381937 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1004431131 is about 31692.7614921767. The cubic root of 1004431131 is about 1001.4748673635.

Adding to 1004431131 its reverse (1311344001), we get a palindrome (2315775132).

The spelling of 1004431131 in words is "one billion, four million, four hundred thirty-one thousand, one hundred thirty-one".