3240402031 has 4 divisors (see below), whose sum is σ = 3270130600. Its totient is φ = 3210673464.

The previous prime is 3240402023. The next prime is 3240402047. The reversal of 3240402031 is 1302040423.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3240402031 - 2³ = 3240402023 is a prime.

It is a super-2 number, since 2×3240402031² = 21000410645017849922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240402331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14864121 + ... + 14864338.

It is an arithmetic number, because the mean of its divisors is an integer number (817532650).

Almost surely, 2^3240402031 is an apocalyptic number.

3240402031 is a deficient number, since it is larger than the sum of its proper divisors (29728569).

3240402031 is a wasteful number, since it uses less digits than its factorization.

3240402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29728568.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 3240402031 is about 56924.5292558489. The cubic root of 3240402031 is about 1479.7884453822.

Adding to 3240402031 its reverse (1302040423), we get a palindrome (4542442454).

The spelling of 3240402031 in words is "three billion, two hundred forty million, four hundred two thousand, thirty-one".