3400631 has 4 divisors (see below), whose sum is σ = 3662232. Its totient is φ = 3139032.

The previous prime is 3400613. The next prime is 3400637. The reversal of 3400631 is 1360043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1360043 = 127 ⋅10709.

It is not a de Polignac number, because 3400631 - 2¹⁴ = 3384247 is a prime.

It is a super-2 number, since 2×3400631² = 23128582396322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3400637) 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, 130781 + ... + 130806.

It is an arithmetic number, because the mean of its divisors is an integer number (915558).

Almost surely, 2^3400631 is an apocalyptic number.

3400631 is a deficient number, since it is larger than the sum of its proper divisors (261601).

3400631 is a wasteful number, since it uses less digits than its factorization.

3400631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261600.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3400631 is about 1844.0799874192. The cubic root of 3400631 is about 150.3787613126.

Adding to 3400631 its reverse (1360043), we get a palindrome (4760674).

The spelling of 3400631 in words is "three million, four hundred thousand, six hundred thirty-one".