3140978121 has 16 divisors (see below), whose sum is σ = 4705588800. Its totient is φ = 2070455904.

The previous prime is 3140978083. The next prime is 3140978147. The reversal of 3140978121 is 1218790413.

It is a happy number.

It is not a de Polignac number, because 3140978121 - 2²³ = 3132589513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3140978161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651151 + ... + 655956.

It is an arithmetic number, because the mean of its divisors is an integer number (294099300).

Almost surely, 2^3140978121 is an apocalyptic number.

It is an amenable number.

3140978121 is a deficient number, since it is larger than the sum of its proper divisors (1564610679).

3140978121 is a wasteful number, since it uses less digits than its factorization.

3140978121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307205 (or 1307199 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 3140978121 is about 56044.4298837984. The cubic root of 3140978121 is about 1464.4963841829.

The spelling of 3140978121 in words is "three billion, one hundred forty million, nine hundred seventy-eight thousand, one hundred twenty-one".