3121309734 has 32 divisors (see below), whose sum is σ = 6353018880. Its totient is φ = 1022196672.

The previous prime is 3121309717. The next prime is 3121309777. The reversal of 3121309734 is 4379031213.

It is a junction number, because it is equal to n+sod(n) for n = 3121309695 and 3121309704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58602 + ... + 98370.

It is an arithmetic number, because the mean of its divisors is an integer number (198531840).

Almost surely, 2^3121309734 is an apocalyptic number.

3121309734 is an abundant number, since it is smaller than the sum of its proper divisors (3231709146).

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

3121309734 is a wasteful number, since it uses less digits than its factorization.

3121309734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40004.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 3121309734 is about 55868.6829449200. The cubic root of 3121309734 is about 1461.4331542563.

The spelling of 3121309734 in words is "three billion, one hundred twenty-one million, three hundred nine thousand, seven hundred thirty-four".