3157371421730 has 16 divisors (see below), whose sum is σ = 6017578474680. Its totient is φ = 1188657476352.

The previous prime is 3157371421697. The next prime is 3157371421739. The reversal of 3157371421730 is 371241737513.

It can be written as a sum of positive squares in 4 ways, for example, as 3149748211009 + 7623210721 = 1774753^2 + 87311^2 .

It is not an unprimeable number, because it can be changed into a prime (3157371421739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9286386365 + ... + 9286386704.

Almost surely, 2^{3157371421730} is an apocalyptic number.

3157371421730 is a deficient number, since it is larger than the sum of its proper divisors (2860207052950).

3157371421730 is a wasteful number, since it uses less digits than its factorization.

3157371421730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18572773093.

The product of its (nonzero) digits is 370440, while the sum is 44.

The spelling of 3157371421730 in words is "three trillion, one hundred fifty-seven billion, three hundred seventy-one million, four hundred twenty-one thousand, seven hundred thirty".