3431257 has 4 divisors (see below), whose sum is σ = 3435316. Its totient is φ = 3427200.

The previous prime is 3431243. The next prime is 3431261. The reversal of 3431257 is 7521343.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 793881 + 2637376 = 891^2 + 1624^2 .

It is a cyclic number.

It is not a de Polignac number, because 3431257 - 2¹⁵ = 3398489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3431237) 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, 228 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (858829).

Almost surely, 2^3431257 is an apocalyptic number.

It is an amenable number.

3431257 is a deficient number, since it is larger than the sum of its proper divisors (4059).

3431257 is a wasteful number, since it uses less digits than its factorization.

3431257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058.

The product of its digits is 2520, while the sum is 25.

The square root of 3431257 is about 1852.3652447614. The cubic root of 3431257 is about 150.8288486672.

It can be divided in two parts, 343 and 1257, that added together give a square (1600 = 40²).

The spelling of 3431257 in words is "three million, four hundred thirty-one thousand, two hundred fifty-seven".