2531404 has 6 divisors (see below), whose sum is σ = 4429964. Its totient is φ = 1265700.

The previous prime is 2531393. The next prime is 2531413. The reversal of 2531404 is 4041352.

It is a super-2 number, since 2×2531404² = 12816012422432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316422 + ... + 316429.

2^2531404 is an apocalyptic number.

It is an amenable number.

2531404 is a deficient number, since it is larger than the sum of its proper divisors (1898560).

2531404 is a wasteful number, since it uses less digits than its factorization.

2531404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632855 (or 632853 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2531404 is about 1591.0386544644. The cubic root of 2531404 is about 136.2868082244.

Adding to 2531404 its reverse (4041352), we get a palindrome (6572756).

The spelling of 2531404 in words is "two million, five hundred thirty-one thousand, four hundred four".