3121743436 has 12 divisors (see below), whose sum is σ = 6243486928. Its totient is φ = 1337890032.

The previous prime is 3121743421. The next prime is 3121743437. The reversal of 3121743436 is 6343471213.

3121743436 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3121743437) 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, 55745391 + ... + 55745446.

Almost surely, 2^3121743436 is an apocalyptic number.

It is an amenable number.

3121743436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121743436 is a wasteful number, since it uses less digits than its factorization.

3121743436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111490848 (or 111490846 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 3121743436 is about 55872.5642511600. The cubic root of 3121743436 is about 1461.5008392114.

The spelling of 3121743436 in words is "three billion, one hundred twenty-one million, seven hundred forty-three thousand, four hundred thirty-six".