2131131404 has 12 divisors (see below), whose sum is σ = 3741247104. Its totient is φ = 1062203664.

The previous prime is 2131131391. The next prime is 2131131437. The reversal of 2131131404 is 4041311312.

It is a super-2 number, since 2×2131131404² = 9083442122230022432, which contains 22 as substring.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839084 + ... + 841619.

It is an arithmetic number, because the mean of its divisors is an integer number (311770592).

Almost surely, 2^2131131404 is an apocalyptic number.

It is an amenable number.

2131131404 is a deficient number, since it is larger than the sum of its proper divisors (1610115700).

2131131404 is a wasteful number, since it uses less digits than its factorization.

2131131404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681024 (or 1681022 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2131131404 is about 46164.1787969850. The cubic root of 2131131404 is about 1286.8761229639.

Adding to 2131131404 its reverse (4041311312), we get a palindrome (6172442716).

The spelling of 2131131404 in words is "two billion, one hundred thirty-one million, one hundred thirty-one thousand, four hundred four".