3261475731 has 8 divisors (see below), whose sum is σ = 4361773504. Its totient is φ = 2167747560.

The previous prime is 3261475729. The next prime is 3261475771. The reversal of 3261475731 is 1375741623.

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

It is not a de Polignac number, because 3261475731 - 2¹ = 3261475729 is a prime.

It is a super-2 number, since 2×3261475731² = 21274447887803968722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3261475731.

It is not an unprimeable number, because it can be changed into a prime (3261475771) 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, 1641241 + ... + 1643226.

It is an arithmetic number, because the mean of its divisors is an integer number (545221688).

Almost surely, 2^3261475731 is an apocalyptic number.

3261475731 is a deficient number, since it is larger than the sum of its proper divisors (1100297773).

3261475731 is a wasteful number, since it uses less digits than its factorization.

3261475731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284801.

The product of its digits is 105840, while the sum is 39.

The square root of 3261475731 is about 57109.3313828835. The cubic root of 3261475731 is about 1482.9894122602.

It can be divided in two parts, 32614 and 75731, that added together give a triangular number (108345 = T₄₆₅).

The spelling of 3261475731 in words is "three billion, two hundred sixty-one million, four hundred seventy-five thousand, seven hundred thirty-one".