2540446431 has 8 divisors (see below), whose sum is σ = 3388177584. Its totient is φ = 1693173120.

The previous prime is 2540446423. The next prime is 2540446481. The reversal of 2540446431 is 1346440452.

It is a happy number.

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

It is not a de Polignac number, because 2540446431 - 2³ = 2540446423 is a prime.

It is a super-2 number, since 2×2540446431² = 12907736137561275522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2540446392 and 2540446401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540446481) 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, 101296 + ... + 123861.

It is an arithmetic number, because the mean of its divisors is an integer number (423522198).

Almost surely, 2^2540446431 is an apocalyptic number.

2540446431 is a deficient number, since it is larger than the sum of its proper divisors (847731153).

2540446431 is a wasteful number, since it uses less digits than its factorization.

2540446431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228921.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 2540446431 is about 50402.8414972807. The cubic root of 2540446431 is about 1364.4889213620.

Adding to 2540446431 its reverse (1346440452), we get a palindrome (3886886883).

The spelling of 2540446431 in words is "two billion, five hundred forty million, four hundred forty-six thousand, four hundred thirty-one".