3141851021 has 4 divisors (see below), whose sum is σ = 3143741952. Its totient is φ = 3139960092.

The previous prime is 3141851017. The next prime is 3141851051. The reversal of 3141851021 is 1201581413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3141851021 - 2² = 3141851017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3141851051) 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, 942971 + ... + 946296.

It is an arithmetic number, because the mean of its divisors is an integer number (785935488).

Almost surely, 2^3141851021 is an apocalyptic number.

It is an amenable number.

3141851021 is a deficient number, since it is larger than the sum of its proper divisors (1890931).

3141851021 is a wasteful number, since it uses less digits than its factorization.

3141851021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890930.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 3141851021 is about 56052.2169142310. The cubic root of 3141851021 is about 1464.6320362464.

The spelling of 3141851021 in words is "three billion, one hundred forty-one million, eight hundred fifty-one thousand, twenty-one".