3132468781 has 4 divisors (see below), whose sum is σ = 3373427932. Its totient is φ = 2891509632.

The previous prime is 3132468761. The next prime is 3132468793. The reversal of 3132468781 is 1878642313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 484440100 + 2648028681 = 22010^2 + 51459^2 .

It is a cyclic number.

It is not a de Polignac number, because 3132468781 - 2²³ = 3124080173 is a prime.

It is a super-2 number, since 2×3132468781² = 19624721327879251922, 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 (3132468761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120479556 + ... + 120479581.

It is an arithmetic number, because the mean of its divisors is an integer number (843356983).

Almost surely, 2^3132468781 is an apocalyptic number.

It is an amenable number.

3132468781 is a deficient number, since it is larger than the sum of its proper divisors (240959151).

3132468781 is a wasteful number, since it uses less digits than its factorization.

3132468781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240959150.

The product of its digits is 193536, while the sum is 43.

The square root of 3132468781 is about 55968.4623783788. The cubic root of 3132468781 is about 1463.1726809911.

The spelling of 3132468781 in words is "three billion, one hundred thirty-two million, four hundred sixty-eight thousand, seven hundred eighty-one".