3140021657 has 2 divisors, whose sum is σ = 3140021658. Its totient is φ = 3140021656.

The previous prime is 3140021639. The next prime is 3140021693. The reversal of 3140021657 is 7561200413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2943713536 + 196308121 = 54256^2 + 14011^2 .

It is a cyclic number.

It is not a de Polignac number, because 3140021657 - 2²⁴ = 3123244441 is a prime.

It is not a weakly prime, because it can be changed into another prime (3140021957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1570010828 + 1570010829.

It is an arithmetic number, because the mean of its divisors is an integer number (1570010829).

Almost surely, 2^3140021657 is an apocalyptic number.

It is an amenable number.

3140021657 is a deficient number, since it is larger than the sum of its proper divisors (1).

3140021657 is an equidigital number, since it uses as much as digits as its factorization.

3140021657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 3140021657 is about 56035.8961470235. The cubic root of 3140021657 is about 1464.3477170883.

The spelling of 3140021657 in words is "three billion, one hundred forty million, twenty-one thousand, six hundred fifty-seven".