3121634 has 4 divisors (see below), whose sum is σ = 4682454. Its totient is φ = 1560816.

The previous prime is 3121633. The next prime is 3121663. The reversal of 3121634 is 4361213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4361213 = 107 ⋅40759.

It can be written as a sum of positive squares in only one way, i.e., 1918225 + 1203409 = 1385^2 + 1097^2 .

It is not an unprimeable number, because it can be changed into a prime (3121633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780407 + ... + 780410.

Almost surely, 2^3121634 is an apocalyptic number.

3121634 is a deficient number, since it is larger than the sum of its proper divisors (1560820).

3121634 is a wasteful number, since it uses less digits than its factorization.

3121634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560819.

The product of its digits is 432, while the sum is 20.

The square root of 3121634 is about 1766.8146478904. The cubic root of 3121634 is about 146.1483760862.

Adding to 3121634 its reverse (4361213), we get a palindrome (7482847).

The spelling of 3121634 in words is "three million, one hundred twenty-one thousand, six hundred thirty-four".